UNITED STATESSECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORTPursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 28, 2014

Alliant Techsystems Inc.(Exact name of registrant as specified in its charter)

Delaware 1-10582 41-1672694(State or other jurisdiction

of incorporation) (CommissionFile Number)

(I.R.S. Employer IdentificationNo.)

1300 Wilson Boulevard, Suite 400Arlington, Virginia 22209-2307

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (703) 412-5960 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the followingprovisions: xWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

ITEM 8.01. OTHER EVENTS

On April 28, 2014, Alliant Techsystems Inc., a Delaware corporation (“ATK”), entered into a Transaction Agreement (the “Transaction Agreement”)with Vista SpinCo Inc., a Delaware corporation and a wholly owned subsidiary of ATK (“Sporting”), Vista Merger Sub Inc., a Delaware corporation and awholly owned subsidiary of ATK (“Merger Sub”) and Orbital Sciences Corporation, a Delaware corporation (“Orbital”), providing for the spin-off of ATK’sSporting Group business to ATK’s stockholders (the “Spin-Off”), which will be immediately followed by the merger of Merger Sub with and into Orbital (the“Merger”), with Orbital surviving the Merger as a wholly owned subsidiary of ATK. Under the terms of the Transaction Agreement, ATK will distribute allthe shares of common stock of Sporting, which will hold ATK’s Sporting Group business, to its stockholders on a pro rata basis and each share of Orbitalcommon stock issued and outstanding immediately prior to the closing of the Merger will be converted into the right to receive 0.449 shares of ATK commonstock. At the closing of the Merger, ATK stockholders will own approximately 53.8% of the combined company on a fully diluted basis and 100% ofSporting, and Orbital stockholders will own the remaining approximately 46.2% of the combined company on a fully diluted basis. The TransactionAgreement was unanimously approved by the board of directors of ATK. A copy of the press release issued by ATK announcing the transaction is attachedas Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The terms of the Transaction Agreement, including theconditions thereto, will be described in a subsequent filing on Form 8-K.

In connection with the transaction, ATK intends, at the time such notes become redeemable at ATK ’s option, to issue a notice of redemption withrespect to its 3.00% Convertible Senior Subordinated Notes due 2024 (the “2024 Notes”) in accordance with the redemption provisions of the indenturegoverning the 2024 Notes. ATK has agreed to settle any 2024 Notes that are converted (whether prior to or following ATK’s notice of redemption) entirely incash. In connection with the transaction, ATK also intends to refinance its 6.875% Senior Subordinated Notes due 2020.

In addition, on April 29, 2014, ATK engaged in various communications with employees, investors and other persons concerning the proposedtransactions. Copies of those communications are filed as exhibits to this report.

* * * * *Cautionary Statement Regarding Forward-Looking Statements

Certain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will bedistributed to ATK’s stockholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger as a wholly-owned subsidiary of ATK(the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of the Transaction and the expected tax treatment for theTransaction, future opportunities for Sporting and the combined company and products and any other statements regarding Sporting’s, ATK’S and Orbital’sfuture expectations, beliefs, plans, objectives, financial conditions, assumptions or future events or performance that are not historical facts are “forward-looking” statements made within the meaning of Section 21E of the Securities Exchange Act of 1934. These statements are often, but not always, madethrough the use of words or phrases such as “may,” “will,” “expected,” “intend,” “estimate,” “anticipate,” “believe,” “project,” or “continue,” and similarexpressions. All such forward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could causeactual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differ materially fromthose projected in the forward-looking statements are the following: the parties’ ability to consummate the Transaction; the conditions to the completion of theTransaction, including the receipt of approval of both ATK’s stockholders and Orbital’s stockholders; the regulatory approvals required for the Transactionnot being obtained on the terms expected or on the anticipated schedule; the parties’ ability to meet expectations regarding the timing, completion and accountingand tax treatments of the Transaction; the possibility that the parties may be unable to achieve expected synergies and operating efficiencies in connection withthe Transaction within the expected time-frames or at all and to successfully integrate Orbital’s operations with those of the ATK Aerospace & Defense; theintegration of Orbital’s operations with those of ATK Aerospace & Defense being more difficult, time-consuming or costly than expected; operating costs,customer loss and business disruption (including, without limitation, difficulties in maintaining relationships with employees, customers, clients orsuppliers) being greater than expected following the Transaction; the retention of certain key employees being difficult; Sporting’s ability to operatesuccessfully as a standalone business; Sporting’s, ATK’s and Orbital’s ability to adapt its services to changes in technology or the marketplace; Sporting’s,ATK’s and Orbital’s ability to maintain and grow its relationship with its customers; reductions or changes in NASA or U.S. Government military spending,timing of payments and budgetary policies, including impacts of sequestration under the Budget Control Act of 2011, and sourcing strategies; intensecompetition; increases in costs, which the business may not be able to react to due to the nature of U.S. Government contracts; changes in cost and revenueestimates and/or timing of programs; the potential termination of U.S. Government contracts and the potential inability to recover termination costs; reductionor change in demand for commercial ammunition, firearms or accessories, including the risk that placed orders exceed actual customer requirements; risksassociated with expansion into commercial markets; actual pension and other postretirement plan asset returns and assumptions regarding future returns,discount rates, service costs, mortality rates, and health care cost trend rates; greater risk associated with international business, including foreign currencyexchange rates and fluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurity and other industrialand physical security threats, and other disruptions; supply, availability, and costs of raw materials and components, including commodity pricefluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such as procurement and import-export control, andfederal and state firearms and ammunition regulations; the novation of U.S. Government contracts; performance of subcontractors; development of keytechnologies and retention of a qualified workforce; fires or explosions at any of Sporting’s, ATK’s or Orbital’s facilities; environmental laws that govern pastpractices and rules and regulations, noncompliance with which may expose Sporting, ATK or Orbital to adverse consequences; impacts of financial marketdisruptions or volatility to customers and vendors; results of acquisitions or other transactions, including the ability to successfully integrate acquiredbusinesses and realize anticipated synergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet ormay not close; unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK and Orbital’s filings with the Securities and ExchangeCommission (the “SEC”), including ATK and Orbital’s most recent Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports onForm 8-K. ATK and Orbital assume no obligation to update or revise publicly the information in this communication, whether as a result of new information,future events or otherwise, except as otherwise required by law. Readers are cautioned not to place undue reliance on these forward-looking statements that

speak only as of the date hereof.

Additional Information and Where to Find It

In connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed to ATK’s stockholdersand Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK, ATK and Orbital intend to filerelevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registration statement on Form S-4 that will include a jointproxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition, Sporting, a subsidiary of ATK, intends to file a registrationstatement on Form 10 or S-1 that will constitute a prospectus of Sporting. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THEJOINT PROXY STATEMENT AND REGISTRATION STATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHENTHEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THEPROPOSED TRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposed transaction(when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when they are available) can also beobtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by calling Michael Pici at 703-412-3216 or fromOrbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at 703-406-5528.

Participants in Solicitation

This communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of their respective directors andexecutive officers may be deemed to be participants in the solicitation of proxies in connection with the proposed transaction under the rules of theSEC. Information regarding ATK directors and executive officers may be found in its Annual Report for the year ended March 31, 2013 on Form 10-K filedwith the SEC on May 23, 2013 and the definitive proxy statement relating to its 2013 Annual Meeting of Stockholders filed with the SEC on June 14,2013. Information regarding Orbital’s directors and executive officers may be found in its Annual Report for the year ended December 31, 2013 on Form 10-Kfiled with the SEC on February 25, 2014 and the definitive proxy statement relating to its 2014 Annual Meeting of Stockholders filed with the SEC on March11, 2014. These documents can be obtained free of charge from the sources indicated above. Additional information regarding the interests of theseparticipants will also be included in the joint proxy statement/prospectus when it becomes available.

Non-Solicitation

This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities, nor shall therebe any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securitieslaws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the SecuritiesAct of 1933, as amended.

ITEM 9.01. FINANCIAL STATEMENTS AND EXHIBITS (d) The following items are filed as exhibits to this report: 99.1 Press Release, dated April 29, 2014.99.2 CEO Letter to Employees. 99.3 CEO Video Transcript.99.4 Letter to Aerospace Group Employees. 99.5 Letter to Defense Group Employees. 99.6 Letter to Sporting Group Employees. 99.7 Employee Q & A. 99.8 Merger Investor Presentation. 99.9 Sporting Spin-Off Presentation Slides.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by theundersigned hereunto duly authorized. ALLIANT TECHSYSTEMS INC. By: /s/ Scott D. Chaplin Name:Scott D. Chaplin Title: Senior Vice President, General Counsel and Secretary Date: April 29, 2014

EXHIBIT INDEX

99.1 Press Release, dated April 29, 2014.99.2 CEO Letter to Employees. 99.3 CEO Video Transcript.99.4 Letter to Aerospace Group Employees. 99.5 Letter to Defense Group Employees. 99.6 Letter to Sporting Group Employees. 99.7 Employee Q & A. 99.8 Merger Investor Presentation. 99.9 Sporting Spin-Off Presentation Slides.

99.9 Sporting Spin-Off Presentation Slides.

Exhibit 99.1

News Release Corporate Communications1300 Wilson Boulevard Suite 400Arlington, Virginia 22209

Phone: 703-412-3231Fax: 703-412-3220

For Immediate Release

Media Contact: Investor Contact: Amanda Covington Michael PiciPhone: 703-412-3231 Phone: 703-412-3216E-mail: amanda.covington@atk.com E-mail: michael.pici@atk.com

ATK Announces Plan to Create Two Independent, Publicly Traded Companies Committed to Leadership in Outdoor Sports and Aerospace andDefense

Spin-Off of ATK’s Sporting Group and a Merger between ATK’s Aerospace and Defense Groups and Orbital Sciences Corporation

ATK and Orbital to Jointly Host and Webcast an Investor Conference Callat 9 a.m. EDT on April 29, 2014

Arlington, Va., April 29, 2014 – Alliant Techsystems Inc. (“ATK” or the “Company”) (NYSE: ATK) today announced that its Board of Directors hasunanimously approved a plan to create two independent, public companies with leadership in Outdoor Sports and Aerospace and Defense (A&D). The boardapproved a definitive agreement that provides for the tax-free spin-off of the Company’s Sporting Group (“Sporting”) to ATK shareholders. The spin-off willbe immediately followed by a tax-free, all-stock merger between ATK’s Aerospace and Defense Groups (“ATK A&D”) and Orbital Sciences Corporation(“Orbital”) (NYSE: ORB), pursuant to which Orbital shareholders will receive shares of ATK common stock as consideration. Upon completion of thetransaction, ATK will change its name to Orbital ATK, Inc. (“Orbital ATK”). Current ATK shareholders will own approximately 53.8 percent of Orbital ATKon a fully diluted basis and current Orbital shareholders will own approximately 46.2 percent. Approximately $1.7 billion of existing ATK debt will remain atOrbital ATK.“We are creating two strong, standalone companies committed to sustained leadership and success in their markets,” said Mark W. DeYoung, President andChief Executive Officer of ATK. “ATK’s Board of Directors and management team continuously evaluate opportunities to best position the company to drivevalue for its shareholders. This transaction presents a compelling opportunity to position and build strong, durable and focused enterprises that deliverinnovation, execution excellence and enhanced opportunities for our customers, partners and employees, and thereby deliver long-term shareholder value.Orbital has been a customer of ATK for more than 25 years; we are familiar with each other and each company’s capabilities, and our respective culturesshare a commitment to innovation and excellence. This alignment provides a solid opportunity to deliver great products to our customers at affordable priceswith the opportunity to capture significant synergies.”

“The Board of Directors believes this plan provides a compelling opportunity for ATK to continue to deliver solid shareholder value and for bothcompanies to excel in their respective businesses,” said General Ronald R. Fogleman, USAF (Ret.), Chairman of ATK’s Board of Directors. “We believe bothcompanies will be better able to support and respond to the needs of their markets and customers, creating a stronger player in the A&D industry, whileunlocking the potential to grow the value of the ATK Sporting Group.”“This merger-of-equals combination of Orbital and ATK brings together two of the space and defense industry’s most innovative developers and cost-efficientmanufacturers who have worked closely together for over 25 years,” said David W. Thompson, Orbital’s Chairman, President and Chief Executive Officer.“By building on complementary technologies products and know-how and highly compatible cultures, Orbital ATK will deliver even more affordable space,defense and aerostructures systems to our existing customers and be well positioned to expand into adjacent markets.”Spin-off of SportingATK operates in three business segments today: Aerospace Group, Defense Group, and Sporting Group. The company has grown significantly over the pasttwo decades through organic growth and acquisitions, building leadership positions in several core and adjacent market segments.The company’s Sporting and A&D businesses operate in two fundamentally different markets with very different operating dynamics, compliancerequirements, customer sets and growth opportunities. As standalone companies, they will be more focused businesses, with clear and distinct strategicvisions and objectives, additional operational flexibility and the financial strength to make the most of their unique opportunities in their respective industries.Since entering the commercial ammunition and sporting accessories space in 2001, ATK has built a leading position in the shooting sports for hunters,shooting enthusiasts and law enforcement professionals. The acquisitions of Savage and Bushnell in 2013 enabled ATK to expand its core competencies whilecreating opportunities to enter into new, adjacent markets in the outdoor recreation industry.

2

In today’s growing market, the Sporting Group enjoys expanded distribution for some of the most widely known and respected brands in theindustry: Federal Premium, Bushnell, Savage Arms, BLACKHAWK!, Primos, Final Approach, Uncle Mike’s, Hoppe’s, RCBS, Alliant Powder, CCI,Speer, Champion Targets, Gold Tip Arrows, Weaver Optics, Outers, Bollé, Cebe, and Serengeti.“Sporting continues to deliver excellent performance,” said DeYoung. “Results from our recently completed fourth quarter demonstrated continued revenue andearnings growth, and margin expansion. Full details on our fourth quarter results will be discussed on our May 15 earnings call.”ATK believes that separating Sporting into a standalone entity will facilitate opportunities to further drive growth and marshal resources to broaden and deepenits market leadership. ATK believes that a more focused corporate leadership team, operating within a clearly defined commercial market with a competitivebusiness model, will contribute to unlocking significant value for ATK shareholders. Following the completion of the transaction, Sporting will also enjoy astrong balance sheet that will provide the ability to fund its growth strategy. Over the past 10 years, ATK’s Sporting Group has delivered annual sales growthof approximately 16 percent (14 percent organic growth).Sporting is expected to be a world leader in outdoor recreation products with adjusted pro forma last twelve months ended December 2013 (LTM Dec) revenuesof $2.2 billion1 and LTM Dec 2013 adjusted EBITDA of $361 million 2 (see reconciliation table for details).Merger between ATK’s Aerospace and Defense Groups and OrbitalATK A&D is the world’s top producer of solid rocket propulsion systems and a growing supplier of military and commercial aircraft structures and satellitesystems. ATK A&D is an industry leader in ammunition, precision and strike weapons, defense electronics systems, missile warning solutions and tacticalrocket motors across air, sea and land-based systems, and ATK A&D has consistently generated strong cash flows and profitability.

1 Includes ATK Sporting Group for LTM Dec plus a full year of Bushnell and Savage2 Includes ATK Sporting Group for LTM Dec, a full year of Bushnell and Savage, allocation of ATK corporate EBIT and estimated public companystandalone costs going forward as if the transaction happened on January 1, 2013. The corporate allocations that were based upon good faith estimates andjudgments, which allocations may require adjustment resulting from the audit of Sporting for purposes of the Form 10 for the Distribution.

3

Following the completion of the transaction, Orbital ATK will be a focused and leading Aerospace & Defense player with combined LTM Dec 2013 revenuesof $4.5 billion, EBITDA of $585 million (see reconciliation table for details), and contracted backlog of $11.0 billion, which includes $3.0 billion inunexercised options from Orbital and $0.2 billion in unexercised options from ATK A&D.3 The combined company will provide customers with advancedcapabilities and a commitment to continuous innovation in support of the U.S. military and allied military requirements, space missions, and aerospacecapabilities. Orbital ATK will serve the following core markets: aerospace through launch vehicles, spacecraft and satellites, military and commercialstructures, and special mission aircraft; and defense through munitions, weapons systems, defense electronics systems, targets, interceptor vehicles andmissile products. Both Sporting and Orbital ATK will continue to benefit from arrangements regarding the sale by Orbital ATK to Sporting of ammunitionfrom the Lake City Army Ammunition Plant, which ATK currently maintains and operates for the U.S. Army, and the sale of components and gun powderfrom New River Energetics.The combination is expected to generate pre-tax cost synergies of $70-100 million through the elimination of duplicate public company costs, economies ofscale, and additional streamlining of operations. Additionally, Orbital ATK is expected to realize revenue synergies of $100-200 million through improvedproduct offerings, improved competitiveness and strengthened customer relationships. The combined company expects to realize partial synergies in 2015 andfully recognize identified synergies by late 2016. Once fully realized, after accounting for the impact of cost-type government programs, cost and revenuesynergies are expected to result in annual EBIT improvement of between $40-65 million. Orbital ATK will have a strong capital structure and with its abilityto generate strong free cash flow, it will be well-positioned to grow, return capital to its shareholders and de-lever.Governance and ManagementUpon completion of the transaction, Mr. DeYoung will serve as the Chairman and Chief Executive Officer of Sporting. Mr. DeYoung is working with ATK’sBoard of Directors to develop detailed plans for an efficient and capable corporate structure with experienced management and strong governance policies andpractices, as well as to establish the name and branding of Sporting. Sporting will be headquartered in Utah and is expected to employ nearly 5,800 workersin 11 states and worldwide.Mr. Thompson, a co-founder of Orbital, will serve as President and Chief Executive Officer of Orbital ATK. Gen. Fogleman will serve as Chairman of theBoard of Directors of Orbital ATK. Blake Larson, ATK Senior Vice President and President of the Aerospace Group, will serve as Chief Operating Officer ofOrbital ATK. Garrett Pierce, Orbital Chief Financial Officer, will serve as CFO for the combined company. Orbital ATK will be headquartered in Dulles,Virginia, where Orbital is currently headquartered, and is expected to have approximately 13,000 employees across 17 states.

3 All figures unaudited, Orbital calendar year 2013 and ATK Aerospace and Defense segments for calendar year 2013 and an allocation of ATK corporateEBIT. This allocation was based on good faith estimates and judgment.

4

Transaction DetailsUnder the terms of the transaction agreement, ATK will distribute ownership of Sporting to ATK shareholders in a spin-off transaction, following which,ATK shareholders will own 100 percent of Sporting. The spin-off will be immediately followed by a merger of Orbital with a subsidiary of ATK, with Orbitalsurviving the merger and becoming a wholly owned subsidiary of ATK. In connection with the merger, Orbital shareholders will receive 0.449 shares of ATKcommon stock for each share of Orbital common stock that they hold. Upon the closing of the merger, ATK shareholders will own approximately 53.8percent of the combined company on a fully diluted basis and Orbital shareholders will own the remaining approximately 46.2 percent of the combinedcompany on a fully diluted basis. As part of the transaction, Sporting has secured a $750 million senior secured financing commitment from BofA MerrillLynch and will dividend $300-350 million of the proceeds of such new indebtedness to ATK immediately prior to the closing, which will be used by ATK torepay existing debt. Post issuing dividend to Orbital ATK, Sporting’s net debt and total debt will be equal to the dividend. At the closing, Orbital ATK isexpected to have a total of approximately $1.7 billion in gross debt and $1.4 billion of net debt. The transaction is expected to be tax-free to both companies aswell as to ATK and Orbital shareholders.The transaction is expected to close by the end of calendar year 2014, and is subject to customary closing conditions including regulatory approvals and theapproval of each of ATK’s and Orbital’s shareholders. ATK and Orbital will continue to operate separately until the transaction closes.ATK intends to continue issuing a quarterly cash dividend to shareholders until the transaction closes.AdvisorsATK’s financial advisor is BofA Merrill Lynch and its legal advisor is Cravath, Swaine & Moore LLP. Orbital’s financial advisor is Citigroup and its legaladvisor is Hogan Lovells US LLP.Conference Call and Webcast DetailsATK and Orbital will jointly host a teleconference call to discuss today’s announcement. The companies welcome members of the investment community tolisten to the call live. A copy of management’s presentation will be available in the investor relations section of www.atk.com.The call is being webcast and can be accessed via the investor relations page at www.atk.com. For those who cannot participate in the live webcast, a telephonerecording of the conference call will be available. The telephone number is 719-457-0820 and the confirmation code is 7630707. The recording will beavailable for one month after the call. Institutional investors can access the call via the password-protected event management site StreetEvents(www.streetevents.com).

5

When: 9:00 a.m. EDT, Tuesday, April 29, 2014 Who: Mark DeYoung, ATK President and Chief Executive Officer Neal Cohen, ATK Executive Vice President and Chief Financial Officer David Thompson, Orbital Chairman, President and Chief Executive Officer Garrett Pierce, Orbital Vice Chairman and Chief Financial Officer Reconciliation of Non-GAAP Financial MeasuresEBITDA and Adjusted EBITDAEBITDA is a measure used by management to measure operating performance, defined as income before interest, income taxes and non-controlling interestplus depreciation and amortization. Adjusted EBITDA is defined as EBITDA further adjusted to give effect to certain adjustments in calculating covenantratios and compliance under the credit facility. ATK believes the inclusion of EBITDA and Adjusted EBITDA is appropriate to provide additional informationto investors about certain material non-cash items and acquired EBITDA during the period.

($M)

Sporting ProForma

Trailing 12Months

12/31/13 (unaudited) EBIT 187 Adjustments:

Acquisition Inventory Step-up 10 Bushnell Acquired EBIT 42 Savage Acquired EBIT 26 M&A Costs 17 Acquisition Transition Costs 3 Incremental Public Company Costs (7)FAS Pension Purchase Accounting 9

Total Adjustments 100 Adjusted EBIT 287

Addback: Depreciation & Amortization 38 Addback: Bushnell Depreciation & Amortization 27 Addback: Savage Depreciation & Amortization 9

Adjusted EBITDA 361

6

ATK A&D

OrbitalAs Reported

Purchase Combined

Orbital ATK

($M) Trailing 12

Months Accounting(unaudited)

12/31/2013 12/31/2013 As of 12/31/13 (unaudited) (unaudited) EBIT $ 356 $ 114 $ (35) $ 470

Addback: Depreciation & Amortization 74 41 35 115 EBITDA 430 155 - 585

***About ATKATK is an aerospace, defense and commercial products company with operations in 22 states, Puerto Rico and internationally . News and information can befound on the Internet at www.atk.com. For access to media video and image assets, please contact Corporate.Communications@atk.com . For moreinformation on Sporting brands, visit www.outdoorwriters.atk.com.About OrbitalOrbital develops and manufactures small- and medium-class rockets and space systems for commercial, military and civil government customers. Thecompany’s primary products are satellites and launch vehicles, including low-Earth orbit, geosynchronous-Earth orbit and planetary exploration spacecraftfor communications, remote sensing, scientific and defense missions; human-rated space systems for Earth-orbit, lunar and other missions; ground- and air-launched rockets that deliver satellites into orbit; and missile defense systems that are used as interceptor and target vehicles. Orbital also provides satellitesubsystems and space-related technical services to U.S. Government agencies and laboratories. More information about Orbital can be found athttp://www.orbital.com.

7

Cautionary Statement Regarding Forward-Looking StatementsCertain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will bedistributed to ATK’s stockholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger as a wholly-owned subsidiary of ATK(the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of the Transaction and the expected tax treatment for theTransaction, future opportunities for Sporting and the ATK/Orbital combined company (the “Combined Company”) and products and any other statementsregarding Sporting’s, ATK’S, Orbital’s, and the Combined Company’s future expectations, beliefs, plans, objectives, financial conditions, assumptions orfuture events or performance that are not historical facts are “forward-looking” statements made within the meaning of Section 21E of the Securities ExchangeAct of 1934. These statements are often, but not always, made through the use of words or phrases such as “may,” “will,” “expected,” “intend,” “estimate,”“anticipate,” “believe,” “project,” or “continue,” and similar expressions. All such forward-looking statements involve estimates and assumptions that aresubject to risks, uncertainties and other factors that could cause actual results to differ materially from the results expressed in the statements. Among the keyfactors that could cause actual results to differ materially from those projected in the forward-looking statements are the following: the parties’ ability toconsummate the Transaction; the conditions to the completion of the Transaction, including the receipt of approval of both ATK’s stockholders and Orbital’sstockholders; the regulatory approvals required for the Transaction not being obtained on the terms expected or on the anticipated schedule; the parties’ abilityto meet expectations regarding the timing, completion and accounting and tax treatments of the Transaction; the possibility that the parties may be unable toachieve expected synergies and operating efficiencies in connection with the Transaction within the expected time-frames or at all and to successfully integrateOrbital’s operations with those of the ATK Aerospace &Defense (“ATK A&D”); the integration of Orbital’s operations with those of ATK A&D being moredifficult, time-consuming or costly than expected; operating costs, customer loss and business disruption (including, without limitation, difficulties inmaintaining relationships with employees, customers, clients or suppliers) being greater than expected following the Transaction; the retention of certain keyemployees being difficult; Sporting’s ability to operate successfully as a standalone business; Sporting’s, ATK’s and Orbital’s ability to adapt its services tochanges in technology or the marketplace; Sporting’s, ATK’s and Orbital’s ability to maintain and grow its relationship with its customers; reductions orchanges in NASA or U.S. Government military spending, timing of payments and budgetary policies, including impacts of sequestration under the BudgetControl Act of 2011, and sourcing strategies; intense competition; increases in costs, which the business may not be able to react to due to the nature of U.S.Government contracts; changes in cost and revenue

8

estimates and/or timing of programs; the potential termination of U.S. Government contracts and the potential inability to recover termination costs; reductionor change in demand for commercial ammunition, firearms or accessories, including the risk that placed orders exceed actual customer requirements; risksassociated with expansion into commercial markets; actual pension and other postretirement plan asset returns and assumptions regarding future returns,discount rates, service costs, mortality rates, and health care cost trend rates; greater risk associated with international business, including foreign currencyexchange rates and fluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurity and other industrialand physical security threats, and other disruptions; supply, availability, and costs of raw materials and components, including commodity pricefluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such as procurement and import-export control, andfederal and state firearms and ammunition regulations; the novation of U.S. Government contracts; performance of subcontractors; development of keytechnologies and retention of a qualified workforce; fires or explosions at any of Sporting’s, ATK’s or Orbital’s facilities; environmental laws that govern pastpractices and rules and regulations, noncompliance with which may expose Sporting, ATK or Orbital to adverse consequences; impacts of financial marketdisruptions or volatility to customers and vendors; results of acquisitions or other transactions, including the ability to successfully integrate acquiredbusinesses and realize anticipated synergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet ormay not close; unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK and Orbital’s filings with the Securities and ExchangeCommission (the “SEC”), including ATK and Orbital’s most recent Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports onForm 8-K. ATK and Orbital assume no obligation to update or revise publicly the information in this communication, whether as a result of new information,future events or otherwise, except as otherwise required by law. Readers are cautioned not to place undue reliance on these forward-looking statements thatspeak only as of the date hereof.

9

Additional Information and Where to Find ItIn connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed to ATK’s stockholdersand Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK, ATK and Orbital intend to filerelevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registration statement on Form S-4 that will include a jointproxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition, Sporting, a subsidiary of ATK, intends to file a registrationstatement on Form 10 or S-1 that will constitute a prospectus of Sporting. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THEJOINT PROXY STATEMENT AND REGISTRATION STATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHENTHEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THEPROPOSED TRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposed transaction(when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when they are available) can also beobtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by calling Michael Pici at 703-412-3216 or fromOrbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at 703-406-5528.Participants in SolicitationThis communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of their respective directors andexecutive officers may be deemed to be participants in the solicitation of proxies in connection with the proposed transaction under the rules of the SEC.Information regarding ATK directors and executive officers may be found in its Annual Report for the year ended March 31, 2013 on Form 10-K filed with theSEC on May 23, 2013 and the definitive proxy statement relating to its 2013 Annual Meeting of Stockholders filed with the SEC on June 14, 2013.Information regarding Orbital’s directors and executive officers may be found in its Annual Report for the year ended December 31, 2013 on Form 10-K filedwith the SEC on February 25, 2014 and the definitive proxy statement relating to its 2014 Annual Meeting of Stockholders filed with the SEC on March 11,2014. These documents can be obtained free of charge from the sources indicated above. Additional information regarding the interests of these participantswill also be included in the joint proxy statement/prospectus when it becomes available.Non-SolicitationThis communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities, nor shall therebe any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securitieslaws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Actof 1933, as amended.

# # #

10

10

Exhibit 99.2

CEO Update: 4/29/14 – A New Day for ATK

Creating Two Standalone CompaniesThis morning, ATK announced that our Board of Directors unanimously approved the creation of two independent, publicly traded companiesthrough the tax-free spin-off of our Sporting Group (Sporting) and a merger between Orbital Sciences Corporation (Orbital) and our Aerospaceand Defense Groups (ATK A&D).

In line with our Vision & Strategy to create leadership positions in all of our core markets – aerospace, defense and sporting – this plan willdeliver value to our shareholders and customers, and new opportunities for our employees.

ATK is well-positioned and ready to create two strong enterprises focused on our core capabilities and long-term growth strategies. Thistransaction allows our Sporting business and our Aerospace and Defense businesses to be more focused in their respective markets andtake advantage of growth opportunities. Today, our Sporting and A&D businesses operate in fundamentally different segments with differentstrategies, operating dynamics, and compliance requirements. This transaction will enable us to broaden and deepen our market leadershipand focus on our unique capabilities and inherent strengths.

Spin-offATK’s Sporting Group is a world leader in ammunition, accessories and firearms for hunting, shooting, outdoor enthusiasts, and lawenforcement professionals. Our recent acquisitions of Savage and Bushnell have increased our exposure to new and adjacent markets,enabling us to successfully deliver a broad portfolio of brands, increased product innovation, and enhanced sourcing and distribution. I amexcited for the future and the opportunity to create a focused, commercial sporting company that is positioned as a world leader in the outdoorrecreation market.

ATK entered the commercial ammunition business with the acquisition of Blount International in 2001. In a little more than a decade, ourinvestments, customer focus, and execution excellence have propelled us into the world’s largest shooting sports and outdoor company.

ATK shareholders will own 100 percent of the shares of the new, publicly traded Sporting company after a proposed tax-free distribution.Sporting will have a strong balance sheet that will support future growth and support the expansion of our capabilities and product offerings.

The company’s headquarters will be in Utah, and I look forward to serving as the Chairman and Chief Executive Officer (CEO) of Sporting.Additional details, including the company name and brand, are being determined and will be shared with you as appropriate. Currently,about 5,800 employees work in the Sporting Group, and we have a footprint in 11 of the United States, Canada, Mexico, Puerto Rico, Europeand Asia.

MergerATK A&D will combine with Orbital in a tax-free, all-stock merger, with Orbital becoming a wholly owned subsidiary of ATK. Upon completionof the transaction, ATK will change its name to Orbital ATK, Inc. (Orbital ATK), and ATK shareholders will own 53.8 percent in the combinedcompany, with Orbital shareholders owning the remaining 46.2 percent. Both companies’ boards of directors approved the definitiveagreement.

Orbital’s co-founder, Chairman, President and CEO, David Thompson, will serve as the combined company’s CEO. Blake Larson, ATKSenior Vice President and President of the Aerospace Group, will serve as Chief Operating Officer for Orbital ATK. General RonaldFogleman, USAF (Ret.), current Chairman of ATK’s Board of Directors, will serve as the Chairman of Orbital ATK’s Board of Directors.Garrett Pierce, Orbital’s Chief Financial Officer will serve as CFO of the combined company. The combined company will be headquarteredin Dulles, Virginia.

Alliant Techsystems Restricted

Orbital was founded in 1982 and has approximately 3,600 employees. We expect the combined company to have approximately 13,000employees. As we move through next steps and more information is publicly available, we will share it with you.

ATK’s Aerospace and Defense Groups are worldwide leaders, producers, suppliers and operators for our military, aerospace, and space-related customers. I am proud of our success and the respect and recognition we receive for our commitment to quality, schedule andmission success. Our implementation of PES has created streamlined processes, improved profit margins and affordability for ourcustomers. I want to thank you for your personal commitment to execution excellence, our customers, to each other, and to our company.

I am excited about this proposed transaction. We have a longstanding relationship with Orbital that reflects similar cultures, complementarycapabilities, and a common focus on innovation and affordability. Orbital has been ATK’s customer for over 25 years, and we have partneredon many successful programs. I am confident the transaction offers both parties the opportunity to create a strong, standalone A&D businesswith competitive programs, strong business execution and processes, and an innovative focus toward meeting emerging customer needs.

Next StepsThe spin-off of the Sporting Group enables the company to harness and invest resources to continue to broaden and deepen its leadershippositions in outdoor recreation markets. The company will have a strong balance sheet and a competitive business model that will continueto support our growth strategy.

This transaction will allow the combined company to have the appropriate resources and focus to pursue A&D leadership in our markets witha strong and broad product offering. We see significant opportunities to positively perform and grow in our core U.S. Government andcommercial businesses as new projects and investments ramp up, and as we continue to secure international contracts.

I am confident in the strength and future of our A&D business. Our Defense Group is an industry leader, securing contracts and deliveringcritical new capabilities to our military members and U.S. allies. Our Aerospace Group is the world's largest producer of solid rocketpropulsion systems and a growing supplier of military and commercial aircraft structures, and small satellite capabilities. We believe themerger will enhance our strategic positioning in these businesses.

We anticipate closing these transactions by the end of calendar year 2014. The proposed spin-off and merger are subject to customary closingconditions, including approval of the transaction by ATK and Orbital shareholders and the receipt of required regulatory approvals.

I know that there are always questions and uncertainty in a season of change. I encourage you to read all of the materials we have provided,watch the employee video on ATKnet, and attend your team meetings. We will keep you apprised of developments as soon as we are able.

Both companies will continue to provide a competitive compensation and benefits package and offer career opportunities for employees intheir specific business segments. We will carefully study the opportunities to combine the Orbital business with ATK A&D in a manner thatbuilds on our collective past successes, and enables us to create a strong combined organization going forward.

Finally, and perhaps most importantly, we must continue our focus on safety and delivering superior quality and performance, because ourcustomers count on our products every day. At this point, for the majority of our company, it is business as usual.

In all that we do, our ultimate success resides with you. Thank you for your continued hard work and dedication.

Sincerely,

Mark DeYoungATK President and Chief Executive Officer

Alliant Techsystems Restricted

2

News Release

ATK Transaction Announcement Webcast at 9 a.m. EDT today

A New Day at ATK website

*Managers, please print this information for employees without email access.

Alliant Techsystems Restricted

3

Cautionary Statement Regarding Forward-Looking Statements Certain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to whichSporting will be distributed to ATK’s shareholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger as awholly-owned subsidiary of ATK (the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of theTransaction and the expected tax treatment for the Transaction, future opportunities for Sporting and the combined company and productsand any other statements regarding Sporting’s, ATK’S and Orbital’s future expectations, beliefs, plans, objectives, financial conditions,assumptions or future events or performance that are not historical facts are “forward-looking” statements made within the meaning ofSection 21E of the Securities Exchange Act of 1934. These statements are often, but not always, made through the use of words or phrasessuch as “may,” “will,” “expected,” “intend,” “estimate,” “anticipate,” “believe,” “project,” or “continue,” and similar expressions. All suchforward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could causeactual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differmaterially from those projected in the forward-looking statements are the following: the parties’ ability to consummate the Transaction; theconditions to the completion of the Transaction, including the receipt of approval of both ATK’s shareholders and Orbital’s shareholders; theregulatory approvals required for the Transaction not being obtained on the terms expected or on the anticipated schedule; the parties’ abilityto meet expectations regarding the timing, completion and accounting and tax treatments of the Transaction; the possibility that the partiesmay be unable to achieve expected synergies and operating efficiencies in connection with the Transaction within the expected time-framesor at all and to successfully integrate Orbital’s operations with those of the ATK A&D; the integration of Orbital’s operations with those of ATKA&D being more difficult, time-consuming or costly than expected; operating costs, customer loss and business disruption (including,without limitation, difficulties in maintaining relationships with employees, customers, clients or suppliers) being greater than expectedfollowing the Transaction; the retention of certain key employees being difficult; Sporting’s ability to operate successfully as a standalonebusiness; Sporting’s, ATK’s and Orbital’s ability to adapt its services to changes in technology or the marketplace; Sporting’s, ATK’s andOrbital’s ability to maintain and grow its relationship with its customers; reductions or changes in NASA or U.S. Government militaryspending, timing of payments and budgetary policies, including impacts of sequestration under the Budget Control Act of 2011, and sourcingstrategies; intense competition; increases in costs, which the business may not be able to react to due to the nature of U.S. Governmentcontracts; changes in cost and revenue estimates and/or timing of programs; the potential termination of U.S. Government contracts and thepotential inability to recover termination costs; reduction or change in demand for commercial ammunition, firearms or accessories,including the risk that placed orders exceed actual customer requirements; risks associated with expansion into commercial markets; actualpension and other postretirement plan asset returns and assumptions regarding future returns, discount rates, service costs, mortality rates,and health care cost trend rates; greater risk associated with international business, including foreign currency exchange rates andfluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurityand other industrial and physical security threats, and other disruptions; supply, availability, and costs of raw materials and components,including commodity price fluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such asprocurement and import-export control, and federal and state firearms and ammunition regulations; the novation of U.S. Governmentcontracts; performance of subcontractors; development of key technologies and retention of a qualified workforce; fires or explosions at any ofSporting’s, ATK’s or Orbital’s facilities; environmental laws that govern past practices and rules and regulations, noncompliance with whichmay expose Sporting, ATK or Orbital to adverse consequences; impacts of financial market disruptions or volatility to customers and vendors;results of acquisitions or other transactions, including the ability to successfully integrate acquired businesses and realize anticipatedsynergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet or may not close;unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK’s and Orbital’s filings with theSecurities and Exchange Commission (the “SEC”), including ATK’s and Orbital’s most recent Annual Reports on Form 10-K, QuarterlyReports on Form 10-Q and Current Reports on Form 8-K. ATK and Orbital assume no obligation to update or revise publicly the informationin this communication, whether as a result of new information, future events or otherwise, except as otherwise required by law. Readers arecautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.

Alliant Techsystems Restricted

4

Additional Information and Where to Find ItIn connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed to ATK’sshareholders and Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK, ATKand Orbital intend to file relevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registrationstatement on Form S-4 that will include a joint proxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition,Sporting, a subsidiary of ATK, intends to file a registration statement on Form 10 or S-1 that will constitute a prospectus of Sporting.INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT AND REGISTRATIONSTATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHEN THEY BECOME AVAILABLE BECAUSETHEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THE PROPOSEDTRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposedtransaction (when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when theyare available) can also be obtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by callingMichael Pici at 703-412-3216 or from Orbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at703-406-5528.

Participants in SolicitationThis communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of their respectivedirectors and executive officers may be deemed to be participants in the solicitation of proxies in connection with the proposed transactionunder the rules of the SEC. Information regarding ATK directors and executive officers may be found in its Annual Report for the year endedMarch 31, 2013 on Form 10-K filed with the SEC on May 23, 2013 and the definitive proxy statement relating to its 2013 Annual Meeting ofShareholders filed with the SEC on June 14, 2013. Information regarding Orbital’s directors and executive officers may be found in itsAnnual Report for the year ended December 31, 2013 on Form 10-K filed with the SEC on February 25, 2014 and the definitive proxystatement relating to its 2014 Annual Meeting of Shareholders filed with the SEC on March 11, 2014. These documents can be obtained freeof charge from the sources indicated above. Additional information regarding the interests of these participants will also be included in thejoint proxy statement/prospectus when it becomes available.

Non-SolicitationThis communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities,nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration orqualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meetingthe requirements of Section 10 of the Securities Act of 1933, as amended.

Alliant Techsystems Restricted 5

5

Exhibit 99.3

ATK CEO EMPLOYEE VIDEO SCRIPT – 29 APRIL 2014

· Thank you for joining me. This morning, we outlined a strong and exciting future for our company and our employees. · I want to take a few moments to talk about that decision and what it means. · ATK’s Board of Directors approved a plan to create two strong, independent companies with leadership positions in their markets · The proposed transaction provides for the spin-off of our Sporting Group. Immediately following the spin-off, Sporting will be a new,

publicly traded company that will be 100 percent owned by ATK shareholders. o The new sporting company will be headquartered in Utah and I will serve as the Chairman and CEO. o Approximately 5,800 employees will work for the Sporting company, in 11 states and internationally. · As part of the proposed transaction and immediately following the spin-off, our Aerospace and Defense Groups will merge with Orbital

Sciences Corporation, with Orbital becoming a subsidiary of ATK. Upon completion of the transaction, ATK will change its name toOrbital ATK, Inc., and ATK shareholders will own approximately 53.8 percent of the shares in the combined company, and Orbitalshareholders will own approximately 46.2 percent of the shares.

o We have a long, collaborative history with Orbital with similar cultures. Both companies are focused on creating market leading

positions, innovative products, quality and execution excellence. o The co-founder and current Chairman, President and CEO of Orbital, Dave Thompson, will serve as the new President and

CEO of Orbital ATK. Our Board Chairman, General Ronald Fogleman, will serve as Chairman of Orbital ATK’s Board ofDirectors.

o Garrett Pierce, Orbital’s Chief Financial Officer, will continue to serve as CFO in the combined company. o Blake Larson, ATK Senior Vice President and President of the Aerospace Group, will serve as Chief Operating Officer. o Orbital ATK’s headquarters will be in Dulles, Virginia and the combined company will employ nearly 13,000 skilled workers.

· Following the close of the transaction, which we anticipate to occur by the end of the calendar year 2014, the new companies will bepoised to build on their leadership positions, grow their businesses and provide opportunities for shareholders, customers, and you.

· ATK’s Board of Directors and management believe that as standalone companies, Sporting and Orbital ATK will be more focusedcompetitors, with the strategic vision, operational flexibility and financial strength to make the most of their opportunities and deliver avalue proposition for our customers and shareholders.

· So what does this mean for you?

o Both companies will have the strategies to support growth on their own and succeed in their markets. o Both companies will continue to provide a competitive compensation and benefits package and offer career opportunities for

employees in their specific business segments.

· So what’s next?

o The transaction is subject to customary closing conditions, including approval by shareholders, and regulatory approval. o A lot of planning and decisions are yet to be made, o Transition teams will begin to work on the transaction. o We will continue to make necessary decisions for the close, such as a name and brand for the new Sporting Company. o At this point, for the majority of the company, it’s business as usual.

· With change comes questions. While we won’t answer all questions up front, we will be publicly disclosing milestones and informationalong the way.

· So what can you do?

o Take the time to understand this decision, read our public materials, and ask questions you may have.

§ We will do our best to keep you informed during this period, however, as is company policy, we won’t be commenting onevery report that appears in the media. My advice is that we all remain focused on the tasks at hand.

o Most importantly, focus on continuing to deliver excellence while doing your job.

§ We must demonstrate to our customers, our suppliers and our shareholders that we are focused on our business. § Strong performance over the next several months will build momentum for the future.

o And, as always, keep safety paramount in all that you do.

· With your help, we have built our business to the point where this is the next logical step for ATK, its shareholders, customers andemployees.

· And I know that we can count on you as we move forward together into an exciting future!

2

Cautionary Statement Regarding Forward-Looking Statements

Certain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant towhich Sporting will be distributed to ATK’s shareholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger asa wholly-owned subsidiary of ATK (the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of theTransaction and the expected tax treatment for the Transaction, future opportunities for Sporting and the combined company and productsand any other statements regarding Sporting’s, ATK’S and Orbital’s future expectations, beliefs, plans, objectives, financial conditions,assumptions or future events or performance that are not historical facts are “forward-looking” statements made within the meaning ofSection 21E of the Securities Exchange Act of 1934. These statements are often, but not always, made through the use of words or phrasessuch as “may,” “will,” “expected,” “intend,” “estimate,” “anticipate,” “believe,” “project,” or “continue,” and similar expressions. All suchforward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could causeactual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differmaterially from those projected in the forward-looking statements are the following: the parties’ ability to consummate the Transaction; theconditions to the completion of the Transaction, including the receipt of approval of both ATK’s shareholders and Orbital’s shareholders; theregulatory approvals required for the Transaction not being obtained on the terms expected or on the anticipated schedule; the parties’ abilityto meet expectations regarding the timing, completion and accounting and tax treatments of the Transaction; the possibility that the partiesmay be unable to achieve expected synergies and operating efficiencies in connection with the Transaction within the expected time-framesor at all and to successfully integrate Orbital’s operations with those of the ATK A&D; the integration of Orbital’s operations with those of ATKA&D being more difficult, time-consuming or costly than expected; operating costs, customer loss and business disruption (including,without limitation, difficulties in maintaining relationships with employees, customers, clients or suppliers) being greater than expectedfollowing the Transaction; the retention of certain key employees being difficult; Sporting’s ability to operate successfully as a standalonebusiness; Sporting’s, ATK’s and Orbital’s ability to adapt its services to changes in technology or the marketplace; Sporting’s, ATK’s andOrbital’s ability to maintain and grow its relationship with its customers; reductions or changes in NASA or U.S. Government militaryspending, timing of payments and budgetary policies, including impacts of sequestration under the Budget Control Act of 2011, and sourcingstrategies; intense competition; increases in costs, which the business may not be able to react to due to the nature of U.S. Governmentcontracts; changes in cost and revenue estimates and/or timing of programs; the potential termination of U.S. Government contracts and thepotential inability to recover termination costs; reduction or change in demand for commercial ammunition, firearms or accessories,including the risk that placed orders exceed actual customer requirements; risks associated with expansion into commercial markets; actualpension and other postretirement plan asset returns and assumptions regarding future returns, discount rates, service costs, mortality rates,and health care cost trend rates; greater risk associated with international business, including foreign currency exchange rates andfluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurityand other industrial and physical security threats, and other disruptions; supply, availability, and costs of raw materials and components,including commodity price fluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such asprocurement and import-export control, and federal and state firearms and ammunition regulations; the novation of U.S. Governmentcontracts; performance of subcontractors; development of key technologies and retention of a qualified workforce; fires or explosions at any ofSporting’s, ATK’s or Orbital’s facilities; environmental laws that govern past practices and rules and regulations, noncompliance with whichmay expose Sporting, ATK or Orbital to adverse consequences; impacts of financial market disruptions or volatility to customers and vendors;results of acquisitions or other transactions, including the ability to successfully integrate acquired businesses and realize anticipatedsynergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet or may not close;unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK’s and Orbital’s filings with theSecurities and Exchange Commission (the “SEC”), including ATK’s and Orbital’s most recent Annual Reports on Form 10-K, QuarterlyReports on Form 10-Q and Current Reports on Form 8-K. ATK and Orbital assume no obligation to update or revise publicly the informationin this communication, whether as a result of new information, future events or otherwise, except as otherwise required by law. Readers arecautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.

3

Additional Information and Where to Find It

In connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed toATK’s shareholders and Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK,ATK and Orbital intend to file relevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registrationstatement on Form S-4 that will include a joint proxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition,Sporting, a subsidiary of ATK, intends to file a registration statement on Form 10 or S-1 that will constitute a prospectus of Sporting.INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT AND REGISTRATIONSTATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHEN THEY BECOME AVAILABLE BECAUSETHEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THE PROPOSEDTRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposedtransaction (when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when theyare available) can also be obtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by callingMichael Pici at 703-412-3216 or from Orbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at703-406-5528. Participants in Solicitation

This communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of theirrespective directors and executive officers may be deemed to be participants in the solicitation of proxies in connection with the proposedtransaction under the rules of the SEC. Information regarding ATK directors and executive officers may be found in its Annual Report for theyear ended March 31, 2013 on Form 10-K filed with the SEC on May 23, 2013 and the definitive proxy statement relating to its 2013 AnnualMeeting of Shareholders filed with the SEC on June 14, 2013. Information regarding Orbital’s directors and executive officers may be foundin its Annual Report for the year ended December 31, 2013 on Form 10-K filed with the SEC on February 25, 2014 and the definitive proxystatement relating to its 2014 Annual Meeting of Shareholders filed with the SEC on March 11, 2014. These documents can be obtained freeof charge from the sources indicated above. Additional information regarding the interests of these participants will also be included in thejoint proxy statement/prospectus when it becomes available. Non-Solicitation

This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy anysecurities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior toregistration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of aprospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.

# # # 4

4

Exhibit 99.4

Memorandum

Date April 29, 2014 From Blake LarsonSubject A New Day for ATK SVP and President To All ATK Aerospace Group

Employees

Today, ATK announced that it has entered into a definitive agreement that provides for the spin-off of the Sporting Group (“Sporting”), to beimmediately followed by a merger between ATK’s Aerospace and Defense Groups (“ATK A&D”) and Orbital Sciences Corporation (“Orbital”),with Orbital becoming a wholly owned subsidiary of ATK. Upon completion of the transaction, ATK will change its name to Orbital ATK, Inc.(“Orbital ATK”).

This is exciting news for the entire company. Following the completion of the transaction, ATK shareholders will own 100 percent of Sportingand approximately 53.8 percent of Orbital ATK, with the remaining 46.2 percent owned by Orbital shareholders. Our CEO, Mark DeYoung,will be Chairman and CEO for Sporting, following the spin-off. The Sporting headquarters will be in Utah.

The combined company, Orbital ATK, will be publicly traded on the New York Stock Exchange. Orbital’s co-founder, Chairman, Presidentand CEO, David Thompson, will serve as President and CEO of Orbital ATK. Garrett Pierce, Orbital’s Chief Financial Officer, will serve asCFO. General Ronald Fogleman, USAF (Ret.), who is our current Board Chairman, will serve as Orbital ATK’s Chairman of the Board. Iam honored at the opportunity to remain with and help lead Orbital ATK as Chief Operating Officer.

ATK has enjoyed a positive working relationship with Orbital for more than two decades. As many of you know, we currently work on severalprograms with Orbital. We are a valued supplier to Orbital, and we understand one another’s processes, expectations and cultures.

Following the completion of the transaction, we will work together to focus on innovative, highly engineered products and executionexcellence as we deliver advanced capabilities and a commitment to continuous innovation to support U.S. and allied military requirements,space missions and aerospace platforms. At this point, for the majority of our company, it is business as usual.

The Aerospace Group has demonstrated a strong commitment to our vision, our mission and our customers. Over the last few years, ouremployees have been relentless in our focus on the mission, collaborated with our industry partners, and demonstrated to our customersthat we are innovative, experienced and solution-oriented. I am proud of the strategic contract wins we have secured, many of them openingnew market opportunities for our business.

We have a strong partnership with our colleagues in the Defense Group and have demonstrated successful program performance withOrbital. This is an exciting opportunity!

We expect to close the transaction by the end of calendar year 2014. Until then, the company will form transition teams to determinecorporate leadership and complete the milestones to meet regulatory and customary closing conditions. Both companies will continue toprovide a competitive compensation and benefits package and offer career opportunities for employees in their specific business segments.

I know you will have questions along the way. Please do all you can to become familiar with the public materials and CEO Mark DeYoung’smemo on ATKnet.

The most important thing for our group is to continue our focus on safety, quality and execution excellence.

I appreciate all you do to make ATK great!

Blake LarsonSenior Vice President, ATKPresident, ATK Aerospace Group

*Managers, please print this for employees without email access.

2

Cautionary Statement Regarding Forward-Looking Statements

Certain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to whichSporting will be distributed to ATK’s shareholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger as awholly-owned subsidiary of ATK (the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of theTransaction and the expected tax treatment for the Transaction, future opportunities for Sporting and the combined company and productsand any other statements regarding Sporting’s, ATK’S and Orbital’s future expectations, beliefs, plans, objectives, financial conditions,assumptions or future events or performance that are not historical facts are “forward-looking” statements made within the meaning ofSection 21E of the Securities Exchange Act of 1934. These statements are often, but not always, made through the use of words or phrasessuch as “may,” “will,” “expected,” “intend,” “estimate,” “anticipate,” “believe,” “project,” or “continue,” and similar expressions. All suchforward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could causeactual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differmaterially from those projected in the forward-looking statements are the following: the parties’ ability to consummate the Transaction; theconditions to the completion of the Transaction, including the receipt of approval of both ATK’s shareholders and Orbital’s shareholders; theregulatory approvals required for the Transaction not being obtained on the terms expected or on the anticipated schedule; the parties’ abilityto meet expectations regarding the timing, completion and accounting and tax treatments of the Transaction; the possibility that the partiesmay be unable to achieve expected synergies and operating efficiencies in connection with the Transaction within the expected time-framesor at all and to successfully integrate Orbital’s operations with those of the ATK A&D; the integration of Orbital’s operations with those of ATKA&D being more difficult, time-consuming or costly than expected; operating costs, customer loss and business disruption (including,without limitation, difficulties in maintaining relationships with employees, customers, clients or suppliers) being greater than expectedfollowing the Transaction; the retention of certain key employees being difficult; Sporting’s ability to operate successfully as a standalonebusiness; Sporting’s, ATK’s and Orbital’s ability to adapt its services to changes in technology or the marketplace; Sporting’s, ATK’s andOrbital’s ability to maintain and grow its relationship with its customers; reductions or changes in NASA or U.S. Government militaryspending, timing of payments and budgetary policies, including impacts of sequestration under the Budget Control Act of 2011, and sourcingstrategies; intense competition; increases in costs, which the business may not be able to react to due to the nature of U.S. Governmentcontracts; changes in cost and revenue estimates and/or timing of programs; the potential termination of U.S. Government contracts and thepotential inability to recover termination costs; reduction or change in demand for commercial ammunition, firearms or accessories,including the risk that placed orders exceed actual customer requirements; risks associated with expansion into commercial markets; actualpension and other postretirement plan asset returns and assumptions regarding future returns, discount rates, service costs, mortality rates,and health care cost trend rates; greater risk associated with international business, including foreign currency exchange rates andfluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurityand other industrial and physical security threats, and other disruptions; supply, availability, and costs of raw materials and components,including commodity price fluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such asprocurement and import-export control, and federal and state firearms and ammunition regulations; the novation of U.S. Governmentcontracts; performance of subcontractors; development of key technologies and retention of a qualified workforce; fires or explosions at any ofSporting’s, ATK’s or Orbital’s facilities; environmental laws that govern past practices and rules and regulations, noncompliance with whichmay expose Sporting, ATK or Orbital to adverse consequences; impacts of financial market disruptions or volatility to customers and vendors;results of acquisitions or other transactions, including the ability to successfully integrate acquired businesses and realize anticipatedsynergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet or may not close;unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK’s and Orbital’s filings with theSecurities and Exchange Commission (the “SEC”), including ATK’s and Orbital’s most recent Annual Reports on Form 10-K, QuarterlyReports on Form 10-Q and Current Reports on Form 8-K. ATK and Orbital assume no obligation to update or revise publicly the informationin this communication, whether as a result of new information, future events or otherwise, except as otherwise required by law. Readers arecautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.

3

Additional Information and Where to Find It In connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed to ATK’sshareholders and Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK, ATKand Orbital intend to file relevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registrationstatement on Form S-4 that will include a joint proxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition,Sporting, a subsidiary of ATK, intends to file a registration statement on Form 10 or S-1 that will constitute a prospectus of Sporting.INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT AND REGISTRATIONSTATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHEN THEY BECOME AVAILABLE BECAUSETHEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THE PROPOSEDTRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposedtransaction (when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when theyare available) can also be obtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by callingMichael Pici at 703-412-3216 or from Orbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at703-406-5528.

Participants in Solicitation This communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of their respectivedirectors and executive officers may be deemed to be participants in the solicitation of proxies in connection with the proposed transactionunder the rules of the SEC. Information regarding ATK directors and executive officers may be found in its Annual Report for the year endedMarch 31, 2013 on Form 10-K filed with the SEC on May 23, 2013 and the definitive proxy statement relating to its 2013 Annual Meeting ofShareholders filed with the SEC on June 14, 2013. Information regarding Orbital’s directors and executive officers may be found in itsAnnual Report for the year ended December 31, 2013 on Form 10-K filed with the SEC on February 25, 2014 and the definitive proxystatement relating to its 2014 Annual Meeting of Shareholders filed with the SEC on March 11, 2014. These documents can be obtained freeof charge from the sources indicated above. Additional information regarding the interests of these participants will also be included in thejoint proxy statement/prospectus when it becomes available. Non-Solicitation This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities,nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration orqualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meetingthe requirements of Section 10 of the Securities Act of 1933, as amended.

4

4

Exhibit 99.5

Memorandum

Date April 29, 2014 From Mike KahnSubject A New Day for ATK SVP and President To All ATK Defense Group

Employees

This morning, the Company announced that it has entered into a definitive agreement that provides for the spin-off of the Sporting Group(Sporting), to be immediately followed by a tax-free, all-stock merger between ATK’s Aerospace and Defense Groups (ATK A&D) and OrbitalSciences Corporation (Orbital). Following the completion of the transaction, ATK shareholders will own 100 percent of the new sportingcompany and approximately 53.8 percent of the combined company, which will be known as Orbital ATK, Inc. (Orbital ATK).

This is exciting news for the entire company, including our Aerospace and Defense businesses. Orbital ATK will be headquartered in Dulles,Virginia. David Thompson, Orbital’s Chairman, President and CEO will serve as President and CEO of Orbital ATK. Blake Larson, ATKSenior Vice President and Aerospace Group President, will serve as Orbital ATK’s Chief Operating Officer. Our current Board ChairmanGeneral Ronald Fogleman, USAF (Ret.), will serve as Orbital ATK’s Chairman of the Board. Garrett Pierce, Orbital’s Chief FinancialOfficer, will serve as CFO of the combined company. Mark DeYoung has been appointed as Chairman and CEO of Sporting, following thespin-off.

This transaction will create a leading A&D company, focused on highly engineered products and execution excellence as we deliver advancedcapabilities and a commitment to continuous innovation to support U.S. and allied military requirements, space missions and aerospaceplatforms.

I believe that this is the right decision for our company and for our Defense Group. We are an industry leader, continuing to secure newbusiness, including international orders, and delivering critical new combat capabilities to the men and women who serve in our U.S. andallied military forces. Our Defense Group will be a strategic asset to the combined company. There are significant opportunities in combiningour group and Orbital, and our expertise and contributions will be valued and needed. We will also continue our partnership with Sporting tosupply Lake City ammunition and New River Energetics components and gun powder.

Our colleagues in the Aerospace Group are the world's largest producer of solid rocket propulsion systems and a growing supplier of militaryand commercial aircraft structures and satellite components and a partner and supplier to Orbital for over 25 years. This transaction will allowus to continue to develop our core aerospace strengths, while pursuing opportunities to better support current and emerging customerrequirements.

There is a lot to accomplish between now and the transaction completion, which is currently expected to occur at the end of calendar year2014. In the interim, a transition team will work to achieve specific milestones for regulatory approvals and customary closing conditions.Both companies will continue to provide a competitive compensation and benefits package and offer career opportunities for employees intheir specific business segments.

If you haven’t already, please read Mark DeYoung’s memo and the press release about the transaction. You can find these materials onATKnet. We will share more information with you when it’s publicly disclosed.

We look forward to creating these two exciting organizations. In the meantime, it should be business as usual for a majority of the company.

I expect all of us to continue to focus on safety, quality and execution excellence.

Thank you for your commitment to our customers, to our business and to each other.

Mike KahnSenior Vice President, ATKPresident, ATK Defense Group

*Managers, please print this for employees without email access.

2

Cautionary Statement Regarding Forward-Looking Statements

Certain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to whichSporting will be distributed to ATK’s shareholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger as awholly-owned subsidiary of ATK (the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of theTransaction and the expected tax treatment for the Transaction, future opportunities for Sporting and the combined company and productsand any other statements regarding Sporting’s, ATK’S and Orbital’s future expectations, beliefs, plans, objectives, financial conditions,assumptions or future events or performance that are not historical facts are “forward-looking” statements made within the meaning ofSection 21E of the Securities Exchange Act of 1934. These statements are often, but not always, made through the use of words or phrasessuch as “may,” “will,” “expected,” “intend,” “estimate,” “anticipate,” “believe,” “project,” or “continue,” and similar expressions. All suchforward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could causeactual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differmaterially from those projected in the forward-looking statements are the following: the parties’ ability to consummate the Transaction; theconditions to the completion of the Transaction, including the receipt of approval of both ATK’s shareholders and Orbital’s shareholders; theregulatory approvals required for the Transaction not being obtained on the terms expected or on the anticipated schedule; the parties’ abilityto meet expectations regarding the timing, completion and accounting and tax treatments of the Transaction; the possibility that the partiesmay be unable to achieve expected synergies and operating efficiencies in connection with the Transaction within the expected time-framesor at all and to successfully integrate Orbital’s operations with those of the ATK A&D; the integration of Orbital’s operations with those of ATKA&D being more difficult, time-consuming or costly than expected; operating costs, customer loss and business disruption (including,without limitation, difficulties in maintaining relationships with employees, customers, clients or suppliers) being greater than expectedfollowing the Transaction; the retention of certain key employees being difficult; Sporting’s ability to operate successfully as a standalonebusiness; Sporting’s, ATK’s and Orbital’s ability to adapt its services to changes in technology or the marketplace; Sporting’s, ATK’s andOrbital’s ability to maintain and grow its relationship with its customers; reductions or changes in NASA or U.S. Government militaryspending, timing of payments and budgetary policies, including impacts of sequestration under the Budget Control Act of 2011, and sourcingstrategies; intense competition; increases in costs, which the business may not be able to react to due to the nature of U.S. Governmentcontracts; changes in cost and revenue estimates and/or timing of programs; the potential termination of U.S. Government contracts and thepotential inability to recover termination costs; reduction or change in demand for commercial ammunition, firearms or accessories,including the risk that placed orders exceed actual customer requirements; risks associated with expansion into commercial markets; actualpension and other postretirement plan asset returns and assumptions regarding future returns, discount rates, service costs, mortality rates,and health care cost trend rates; greater risk associated with international business, including foreign currency exchange rates andfluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurityand other industrial and physical security threats, and other disruptions; supply, availability, and costs of raw materials and components,including commodity price fluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such asprocurement and import-export control, and federal and state firearms and ammunition regulations; the novation of U.S. Governmentcontracts; performance of subcontractors; development of key technologies and retention of a qualified workforce; fires or explosions at any ofSporting’s, ATK’s or Orbital’s facilities; environmental laws that govern past practices and rules and regulations, noncompliance with whichmay expose Sporting, ATK or Orbital to adverse consequences; impacts of financial market disruptions or volatility to customers and vendors;results of acquisitions or other transactions, including the ability to successfully integrate acquired businesses and realize anticipatedsynergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet or may not close;unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK’s and Orbital’s filings with theSecurities and Exchange Commission (the “SEC”), including ATK’s and Orbital’s most recent Annual Reports on Form 10-K, QuarterlyReports on Form 10-Q and Current Reports on Form 8-K. ATK and Orbital assume no obligation to update or revise publicly the informationin this communication, whether as a result of new information, future events or otherwise, except as otherwise required by law. Readers arecautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.

3

Additional Information and Where to Find It In connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed to ATK’sshareholders and Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK, ATKand Orbital intend to file relevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registrationstatement on Form S-4 that will include a joint proxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition,Sporting, a subsidiary of ATK, intends to file a registration statement on Form 10 or S-1 that will constitute a prospectus of Sporting.INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT AND REGISTRATIONSTATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHEN THEY BECOME AVAILABLE BECAUSETHEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THE PROPOSEDTRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposedtransaction (when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when theyare available) can also be obtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by callingMichael Pici at 703-412-3216 or from Orbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at703-406-5528.

Participants in Solicitation This communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of their respectivedirectors and executive officers may be deemed to be participants in the solicitation of proxies in connection with the proposed transactionunder the rules of the SEC. Information regarding ATK directors and executive officers may be found in its Annual Report for the year endedMarch 31, 2013 on Form 10-K filed with the SEC on May 23, 2013 and the definitive proxy statement relating to its 2013 Annual Meeting ofShareholders filed with the SEC on June 14, 2013. Information regarding Orbital’s directors and executive officers may be found in itsAnnual Report for the year ended December 31, 2013 on Form 10-K filed with the SEC on February 25, 2014 and the definitive proxystatement relating to its 2014 Annual Meeting of Shareholders filed with the SEC on March 11, 2014. These documents can be obtained freeof charge from the sources indicated above. Additional information regarding the interests of these participants will also be included in thejoint proxy statement/prospectus when it becomes available.

Non-Solicitation This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities,nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration orqualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meetingthe requirements of Section 10 of the Securities Act of 1933, as amended.

4

4

Exhibit 99.6

Memorandum

Date April 29, 2014 From Jay TibbetsSubject A New Sporting Company SVP and President To All Employees By now, you have heard the exciting news that ATK’s Board of Directors has approved a plan to create two independent public companies inOutdoor Sports and Aerospace & Defense. The transaction will be accomplished by a tax-free spin-off of our Sporting business (Sporting) toATK shareholders, immediately followed by a tax-free, all-stock merger of the remaining ATK businesses (ATK A&D) with Orbital SciencesCorporation (Orbital). ATK shareholders will own 100 percent of the shares in Sporting and approximately 53.8 percent of the shares in thecombined company, which will be known as Orbital ATK, Inc. (Orbital ATK).ATK’s Board of Directors also announced that Mark DeYoung will serve as the Chairman and CEO of the new sporting company followingthe spin-off of the Sporting Group. Sporting’s corporate headquarters will be located in Utah. At this point, for the majority of our company, it is business as usual. I hope you’ve had a chance to read Mark’s memo and the press releaseabout the planned transaction. If not, you can find them on ATKnet.Management and our Board of Directors believe that as two separate, standalone companies, Sporting and Orbital ATK will now be directlyaligned with their respective market peers along with the strategic vision, operational flexibility and financial strength to offer a morecompetitive value proposition to their customers and consumers.Many of you were here at the beginning when ATK entered the commercial ammunition market in 2001. Subsequently, with Mark’sleadership, we have acquired new capabilities to build out a complementary portfolio of ammunition, accessories and sporting arms. Withyour continued support, we will create new business opportunities while expanding into adjacent markets. This is great news for the SportingGroup as we now prepare to stand alone as a commercial company with what we believe to be a unique and compelling value proposition: ● Comprehensive portfolio offering of value-added products ● Powerful consumer brands with innovative appeal ● Core capabilities in sales, marketing and distribution ● Supplier of choice – highly relevant product offering to retailers, wholesalers and distributors ● World-class and experienced workforce focused on continuous improvement ● Growing outdoor lifestyles company with exciting career development opportunities ● A focus on execution excellence that creates value for our customers and shareholders

There is a lot to accomplish between now and the transaction completion, which is currently expected to occur by the end of calendar year2014, including developing a new corporate name and brand, and setting up a new corporate-level leadership team. Accordingly, a transitionteam will work to achieve specific milestones for regulatory reviews and customary closing conditions. Both companies will continue toprovide a competitive compensation and benefits package and offer career opportunities for employees in their specific business segments.

After the anticipated closing, there will be an approximately 12-month transition period that will include certain shared services supportprovided to Sporting by Orbital ATK. We will also continue our partnership with the Lake City and New River Energetics facilities for sourcedammunition, components and gun powder. I encourage you to learn about this exciting change in Sporting’s strategy, review related materials, attend meetings and ask questions. Wewill continue to update you on progress of the transition, but it is imperative that you remain focused on executing our business plan andmeeting our customers’ expectations. I appreciate your continued support and unwavering commitment to safe and environmentally responsible operations. Your contributionshave positioned us for a promising future!

Jay TibbetsSenior Vice President, ATKPresident, ATK Sporting Group *Managers, please print this information for employees without email access.

2

Cautionary Statement Regarding Forward-Looking Statements

Certain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to whichSporting will be distributed to ATK’s shareholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger as awholly-owned subsidiary of ATK (the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of theTransaction and the expected tax treatment for the Transaction, future opportunities for Sporting and the combined company and productsand any other statements regarding Sporting’s, ATK’S and Orbital’s future expectations, beliefs, plans, objectives, financial conditions,assumptions or future events or performance that are not historical facts are “forward-looking” statements made within the meaning ofSection 21E of the Securities Exchange Act of 1934. These statements are often, but not always, made through the use of words or phrasessuch as “may,” “will,” “expected,” “intend,” “estimate,” “anticipate,” “believe,” “project,” or “continue,” and similar expressions. All suchforward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could causeactual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differmaterially from those projected in the forward-looking statements are the following: the parties’ ability to consummate the Transaction; theconditions to the completion of the Transaction, including the receipt of approval of both ATK’s shareholders and Orbital’s shareholders; theregulatory approvals required for the Transaction not being obtained on the terms expected or on the anticipated schedule; the parties’ abilityto meet expectations regarding the timing, completion and accounting and tax treatments of the Transaction; the possibility that the partiesmay be unable to achieve expected synergies and operating efficiencies in connection with the Transaction within the expected time-framesor at all and to successfully integrate Orbital’s operations with those of the ATK A&D; the integration of Orbital’s operations with those of ATKA&D being more difficult, time-consuming or costly than expected; operating costs, customer loss and business disruption (including,without limitation, difficulties in maintaining relationships with employees, customers, clients or suppliers) being greater than expectedfollowing the Transaction; the retention of certain key employees being difficult; Sporting’s ability to operate successfully as a standalonebusiness; Sporting’s, ATK’s and Orbital’s ability to adapt its services to changes in technology or the marketplace; Sporting’s, ATK’s andOrbital’s ability to maintain and grow its relationship with its customers; reductions or changes in NASA or U.S. Government militaryspending, timing of payments and budgetary policies, including impacts of sequestration under the Budget Control Act of 2011, and sourcingstrategies; intense competition; increases in costs, which the business may not be able to react to due to the nature of U.S. Governmentcontracts; changes in cost and revenue estimates and/or timing of programs; the potential termination of U.S. Government contracts and thepotential inability to recover termination costs; reduction or change in demand for commercial ammunition, firearms or accessories,including the risk that placed orders exceed actual customer requirements; risks associated with expansion into commercial markets; actualpension and other postretirement plan asset returns and assumptions regarding future returns, discount rates, service costs, mortality rates,and health care cost trend rates; greater risk associated with international business, including foreign currency exchange rates andfluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurityand other industrial and physical security threats, and other disruptions; supply, availability, and costs of raw materials and components,including commodity price fluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such asprocurement and import-export control, and federal and state firearms and ammunition regulations; the novation of U.S. Governmentcontracts; performance of subcontractors; development of key technologies and retention of a qualified workforce; fires or explosions at any ofSporting’s, ATK’s or Orbital’s facilities; environmental laws that govern past practices and rules and regulations, noncompliance with whichmay expose Sporting, ATK or Orbital to adverse consequences; impacts of financial market disruptions or volatility to customers and vendors;results of acquisitions or other transactions, including the ability to successfully integrate acquired businesses and realize anticipatedsynergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet or may not close;unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK’s and Orbital’s filings with theSecurities and Exchange Commission (the “SEC”), including ATK’s and Orbital’s most recent Annual Reports on Form 10-K, QuarterlyReports on Form 10-Q and Current Reports on Form 8-K. ATK and Orbital assume no obligation to update or revise publicly the informationin this communication, whether as a result of new information, future events or otherwise, except as otherwise required by law. Readers arecautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.

3

Additional Information and Where to Find It In connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed to ATK’sshareholders and Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK, ATKand Orbital intend to file relevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registrationstatement on Form S-4 that will include a joint proxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition,Sporting, a subsidiary of ATK, intends to file a registration statement on Form 10 or S-1 that will constitute a prospectus of Sporting.INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT AND REGISTRATIONSTATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHEN THEY BECOME AVAILABLE BECAUSETHEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THE PROPOSEDTRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposedtransaction (when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when theyare available) can also be obtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by callingMichael Pici at 703-412-3216 or from Orbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at703-406-5528. Participants in Solicitation This communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of their respectivedirectors and executive officers may be deemed to be participants in the solicitation of proxies in connection with the proposed transactionunder the rules of the SEC. Information regarding ATK directors and executive officers may be found in its Annual Report for the year endedMarch 31, 2013 on Form 10-K filed with the SEC on May 23, 2013 and the definitive proxy statement relating to its 2013 Annual Meeting ofShareholders filed with the SEC on June 14, 2013. Information regarding Orbital’s directors and executive officers may be found in itsAnnual Report for the year ended December 31, 2013 on Form 10-K filed with the SEC on February 25, 2014 and the definitive proxystatement relating to its 2014 Annual Meeting of Shareholders filed with the SEC on March 11, 2014. These documents can be obtained freeof charge from the sources indicated above. Additional information regarding the interests of these participants will also be included in thejoint proxy statement/prospectus when it becomes available. Non-Solicitation This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities,nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration orqualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meetingthe requirements of Section 10 of the Securities Act of 1933, as amended.

4

4

Exhibit 99.7

Employee Q&A

Employee Q&A

General

What was announced today?ATK’s Board of Directors has approved a plan to create two independent public companies in Outdoor Sports and Aerospace & Defense. Thetransaction will be accomplished by a tax-free spin-off of our Sporting Group (Sporting) to ATK shareholders, immediately followed by a tax-free, all-stock merger of the remaining ATK businesses (ATK’s Aerospace and Defense Groups) with Orbital Sciences Corporation. Thecombined company will be known as Orbital ATK, Inc. ATK shareholders will own 100 percent of the shares of Sporting and approximately53.8 percent of the shares in the combined company, with Orbital shareholders owning the remaining 46.2 percent of the shares. For moreinformation, please read the press release on www.atk.com. What does this mean for me?Both companies will have strategies to support growth on their own and succeed in their markets. Both companies will continue to provide acompetitive compensation and benefits package and offer career opportunities for employees in their specific business segments. Orbital andATK have similar cultures and a history of working together. We currently work together on several programs, including Antares, Pegasus,Stratolaunch and others. ATK is currently a valued supplier to Orbital, and we understand one another’s processes, expectations andcultures.

When is the transaction expected to be completed?The transaction is subject to a number of customary closing conditions. The transaction is expected to close by the end of calendar year 2014,with milestones throughout the year. ATK and Orbital will continue to operate separately until the transaction closes. When will we receive more specifics on how this impacts current ATK employees?As we continue to file public documents throughout this process, we will share information with you. We will do our best to keep youinformed, but we won’t be commenting on every report that appears in the media.

Where will the headquarters be located?Orbital ATK’s headquarters will be in Dulles, Virginia. The new Sporting company’s headquarters will be in Utah. Will my benefits stay the same?There will not be any changes at this time. The companies will assess the programs to determine whether changes are warranted afterclosing. What should I be doing now?Most importantly, continue to stay safe while delivering quality, on-time products to customers. Take time to read the announcement and ourpublic materials and understand this decision.

Financial

Financial

What are the terms of the transaction?Please see the press release on www.atk.com for what has been made publicly available. Why did ATK make this move now?ATK’s Sporting and A&D businesses operate in two fundamentally different markets with very different operating dynamics, compliancerequirements, customer sets and growth opportunities. As standalone companies, they will be more focused businesses, with clear anddistinct visions and objectives, additional operational flexibility, and the financial strength to make the most of their unique opportunities intheir respective industries. What does this mean if I hold ATK stock?ATK shareholders will own 100 percent of the shares in Sporting and approximately 53.8 percent of the shares in Orbital ATK. Employeeswho hold unvested equity awards in ATK will receive information about how those awards will be converted into equity awards in the newcompanies. Are there any regulatory or shareholder approvals needed before the transaction can be completed?Yes. The transaction is expected to close by the end of calendar year 2014 and is subject to customary closing conditions, including regulatoryapprovals and the approval of ATK’s and Orbital’s shareholders. ATK and Orbital will continue to operate separately until the transactioncloses.

Operations

Operations

Will there be any layoffs as a result of this transaction?Integration planning has not yet begun. We will share any updates with you once the planning is in progress.

Will any facilities be closed as a result of this transaction?Integration planning has not yet begun. We will share any updates with you once the planning is in progress.

What does this mean for ATK’s customers?Customers should not see any changes as a result of the transaction. We will continue to deliver highly engineered products that meet theneeds of our customers.

Sporting

gWhat is the name of the new Sporting company?The name has not yet been announced.

What positions have been announced at the new Sporting company?Mark DeYoung will serve as Chairman and CEO.

Where will the headquarters for the new Sporting company be located?Utah

How long will it take to separate the Sporting Group from ATK?At the closing, Sporting will be an independent public company. After the closing, there will be an approximately 12-month transition periodthat will include certain shared services support provided to Sporting by Orbital ATK. Both Sporting and Orbital ATK will continue to benefitfrom arrangements regarding the sale by Orbital ATK to Sporting of ammunition from the Lake City Army Ammunition Plant, which ATKcurrently maintains and operates for the U.S. Army, and the sale of components and gun powder from New River Energetics.

2

Why did ATK make the decision to spin the Sporting Group?ATK believes that evolving Sporting into a standalone entity will facilitate opportunities to further drive growth and marshal resources tobroaden and deepen its market leadership. ATK believes that a more focused corporate leadership team, operating within a clearly definedcommercial market will contribute to unlocking significant value for ATK shareholders.

Will the new Sporting company keep the same products?As of now, there are no changes to announce regarding ATK’s sporting and outdoor product portfolio.

A & D

What is the name of the new A&D company?Orbital ATK, Inc.

What positions have been announced at Orbital ATK?Orbital’s co-founder, Chairman, President and CEO David Thompson will serve as President and CEO of Orbital ATK. Blake Larson, ATK’sSenior Vice President and Aerospace Group President, will serve as Orbital ATK’s Chief Operating Officer. Garrett Pierce, Orbital’s ChiefFinancial Officer, will serve as CFO at Orbital ATK. General Ron Fogleman, USAF (Ret.), who currently serves as ATK’s Board Chairman,will serve as Orbital ATK’s Chairman of the Board.

Where will the headquarters for Orbital ATK be located?Dulles, Virginia.

Do shareholders have to approve the merger?Closing of the merger is subject to approval by both ATK shareholders and Orbital shareholders.

Why is ATK merging with Orbital?We currently work with Orbital on several programs, including Antares, Minuteman, Pegasus, Stratolaunch and others. We are currently avalued supplier to Orbital, and we understand one another’s processes, expectations and cultures.

Will ATK continue to pay a dividend to shareholders?ATK will continue to pay a dividend to shareholders until the transaction is complete. The future dividend has not been determined at thistime.

3

Cautionary Statement Regarding Forward-Looking Statements

Certain statements in this communication regarding the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to whichSporting will be distributed to ATK’s shareholders and Orbital will merge with a subsidiary of ATK with Orbital surviving the merger as awholly-owned subsidiary of ATK (the “Transaction”), the expected timetable for completing the Transaction, benefits and synergies of theTransaction and the expected tax treatment for the Transaction, future opportunities for Sporting and the combined company and productsand any other statements regarding Sporting’s, ATK’S and Orbital’s future expectations, beliefs, plans, objectives, financial conditions,assumptions or future events or performance that are not historical facts are “forward-looking” statements made within the meaning ofSection 21E of the Securities Exchange Act of 1934. These statements are often, but not always, made through the use of words or phrasessuch as “may,” “will,” “expected,” “intend,” “estimate,” “anticipate,” “believe,” “project,” or “continue,” and similar expressions. All suchforward-looking statements involve estimates and assumptions that are subject to risks, uncertainties and other factors that could causeactual results to differ materially from the results expressed in the statements. Among the key factors that could cause actual results to differmaterially from those projected in the forward-looking statements are the following: the parties’ ability to consummate the Transaction; theconditions to the completion of the Transaction, including the receipt of approval of both ATK’s shareholders and Orbital’s shareholders; theregulatory approvals required for the Transaction not being obtained on the terms expected or on the anticipated schedule; the parties’ abilityto meet expectations regarding the timing, completion and accounting and tax treatments of the Transaction; the possibility that the partiesmay be unable to achieve expected synergies and operating efficiencies in connection with the Transaction within the expected time-framesor at all and to successfully integrate Orbital’s operations with those of the ATK A&D; the integration of Orbital’s operations with those of ATKA&D being more difficult, time-consuming or costly than expected; operating costs, customer loss and business disruption (including,without limitation, difficulties in maintaining relationships with employees, customers, clients or suppliers) being greater than expectedfollowing the Transaction; the retention of certain key employees being difficult; Sporting’s ability to operate successfully as a standalonebusiness; Sporting’s, ATK’s and Orbital’s ability to adapt its services to changes in technology or the marketplace; Sporting’s, ATK’s andOrbital’s ability to maintain and grow its relationship with its customers; reductions or changes in NASA or U.S. Government militaryspending, timing of payments and budgetary policies, including impacts of sequestration under the Budget Control Act of 2011, and sourcingstrategies; intense competition; increases in costs, which the business may not be able to react to due to the nature of U.S. Governmentcontracts; changes in cost and revenue estimates and/or timing of programs; the potential termination of U.S. Government contracts and thepotential inability to recover termination costs; reduction or change in demand for commercial ammunition, firearms or accessories,including the risk that placed orders exceed actual customer requirements; risks associated with expansion into commercial markets; actualpension and other postretirement plan asset returns and assumptions regarding future returns, discount rates, service costs, mortality rates,and health care cost trend rates; greater risk associated with international business, including foreign currency exchange rates andfluctuations in those rates; other risks associated with U.S. Government contracts that might expose Sporting, ATK or Orbital to adverseconsequences; costs of servicing debt, including cash requirements and interest rate fluctuations; security threats, including cybersecurityand other industrial and physical security threats, and other disruptions; supply, availability, and costs of raw materials and components,including commodity price fluctuations; government laws and other rules and regulations applicable to Sporting, ATK and Orbital, such asprocurement and import-export control, and federal and state firearms and ammunition regulations; the novation of U.S. Governmentcontracts; performance of subcontractors; development of key technologies and retention of a qualified workforce; fires or explosions at any ofSporting’s, ATK’s or Orbital’s facilities; environmental laws that govern past practices and rules and regulations, noncompliance with whichmay expose Sporting, ATK or Orbital to adverse consequences; impacts of financial market disruptions or volatility to customers and vendors;results of acquisitions or other transactions, including the ability to successfully integrate acquired businesses and realize anticipatedsynergies, cost savings and other benefits, and costs incurred for pursuits and proposed acquisitions that have not yet or may not close;unanticipated changes in the tax provision or exposure to additional tax liabilities; and the costs and ultimate outcome of litigation matters andother legal proceedings. Additional information concerning these and other factors can be found in ATK’s and Orbital’s filings with theSecurities and Exchange Commission (the “SEC”), including ATK’s and Orbital’s most recent Annual Reports on Form 10-K, QuarterlyReports on Form 10-Q and Current Reports on Form 8-K. ATK and Orbital assume no obligation to update or revise publicly the informationin this communication, whether as a result of new information, future events or otherwise, except as otherwise required by law. Readers arecautioned not to place undue reliance on these forward-looking statements that speak only as of the date hereof.

4

Additional Information and Where to Find It

In connection with the proposed “Morris Trust” transaction between ATK and Orbital, pursuant to which Sporting will be distributed toATK’s shareholders and Orbital will merge with a subsidiary of ATK, with Orbital surviving the merger as a wholly-owned subsidiary of ATK,ATK and Orbital intend to file relevant materials with the Securities and Exchange Commission (the “SEC”), including an ATK registrationstatement on Form S-4 that will include a joint proxy statement of ATK and Orbital that also constitutes a prospectus of ATK. In addition,Sporting, a subsidiary of ATK, intends to file a registration statement on Form 10 or S-1 that will constitute a prospectus of Sporting.INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT AND REGISTRATIONSTATEMENTS/PROSPECTUSES AND ANY OTHER RELEVANT DOCUMENTS WHEN THEY BECOME AVAILABLE BECAUSETHEY WILL CONTAIN IMPORTANT INFORMATION ABOUT ATK, ORBITAL, SPORTING AND THE PROPOSEDTRANSACTION. The joint proxy statement and registration statements/prospectuses and other documents relating to the proposedtransaction (when they are available) can be obtained free of charge from the SEC’s website at www.sec.gov. These documents (when theyare available) can also be obtained free of charge from ATK upon written request to ATK by emailing investor.relations@atk.com or by callingMichael Pici at 703-412-3216 or from Orbital upon written request to Orbital at investor.relations@orbital.com or by calling Barron Beneski at703-406-5528.

Participants in Solicitation

This communication is not a solicitation of a proxy from any investor or securityholder. However, ATK, Orbital and certain of theirrespective directors and executive officers may be deemed to be participants in the solicitation of proxies in connection with the proposedtransaction under the rules of the SEC. Information regarding ATK directors and executive officers may be found in its Annual Report for theyear ended March 31, 2013 on Form 10-K filed with the SEC on May 23, 2013 and the definitive proxy statement relating to its 2013 AnnualMeeting of Shareholders filed with the SEC on June 14, 2013. Information regarding Orbital’s directors and executive officers may be foundin its Annual Report for the year ended December 31, 2013 on Form 10-K filed with the SEC on February 25, 2014 and the definitive proxystatement relating to its 2014 Annual Meeting of Shareholders filed with the SEC on March 11, 2014. These documents can be obtained freeof charge from the sources indicated above. Additional information regarding the interests of these participants will also be included in thejoint proxy statement/prospectus when it becomes available.

Non-Solicitation This communication shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities,nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration orqualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meetingthe requirements of Section 10 of the Securities Act of 1933, as amended.

5

Exhibit 99.8

A N e w L e a d e r i n A & D M e r g e r o f A T K A e r o s p a c e & D e f e n s e a n d O r b i t a l S c i e n c e s C o r p o r a t i o n A p r i l 2 9 , 2 0 1 4

F o r w a r d - L o o k i n g S t a t e m e n t C a u t i o n a r y S t a t e m e n t R e g a r d i n g F o r w a r d - L o o k i n g S t a t e m e n t sC e r t a i n s t a t e m e n t s i n t h i s c o m m u n i c a t i o n r e g a r d i n g t h e p r o p o s e d “ M o r r i s T r u s t ” t r a n s a c t i o n b e t w e e n A T K a n d O r b i t a l , p u r s u a n t t o w h i c h S p o r t i n g w i l l b e d i s t r i b u t e d t o A T K ’ s s t o c k h o l d e r s a n d O r b i t a l w i l l m e r g e w i t h a s u b s i d i a r y o f A T K w i t h O r b i t a l s u r v i v i n g t h e m e r g e r a s a w h o l l y - o w n e d s u b s i d i a r y o f A T K ( t h e “ T r a n s a c t i o n ” ) , t h e e x p e c t e d t i m e t a b l e f o r c o m p l e t i n g t h e T r a n s a c t i o n , b e n e f i t s a n d s y n e r g i e s o f t h e T r a n s a c t i o n a n d t h e e x p e c t e d t a x t r e a t m e n t f o r t h e T r a n s a c t i o n , f u t u r e o p p o r t u n i t i e s f o r S p o r t i n g a n d t h e A T K / O r b i t a l c o m b i n e d c o m p a n y ( t h e “ C o m b i n e d C o m p a n y ” ) a n d p r o d u c t s a n d a n y o t h e r s t a t e m e n t s r e g a r d i n g S p o r t i n g ’ s , A T K ’ s , O r b i t a l ’ s , a n d t h e C o m b i n e d C o m p a n y ’ sf u t u r e e x p e c t a t i o n s , b e l i e f s , p l a n s , o b j e c t i v e s , f i n a n c i a l c o n d i t i o n s , a s s u m p t i o n s o r f u t u r e e v e n t s o r p e r f o r m a n c e t h a t a r e n o t h i s t o r i c a l f a c t s a r e “ f o r w a r d - l o o k i n g ” s t a t e m e n t s m a d e w i t h i n t h e m e a n i n g o f S e c t i o n 2 1 E o f t h e S e c u r i t i e s E x c h a n g e A c t o f 1 9 3 4 . T h e s e s t a t e m e n t s a r e o f t e n , b u t n o t a l w a y s , m a d e t h r o u g h t h e u s e o f w o r d s o r p h r a s e s s u c h a s “ m a y , ” “ w i l l , ” “ e x p e c t e d , ” “ i n t e n d , ” “ e s t i m a t e , ” “ a n t i c i p a t e , ” “ b e l i e v e , ” “ p r o j e c t , ” o r “ c o n t i n u e , ” a n d s i m i l a r e x p r e s s i o n s . A l l s u c h f o r w a r d - l o o k i n g s t a t e m e n t s i n v o l v e e s t i m a t e s a n d a s s u m p t i o n s t h a t a r e s u b j e c t t o r i s k s , u n c e r t a i n t i e s a n d o t h e r f a c t o r s t h a t c o u l d c a u s e a c t u a l r e s u l t s t o d i f f e r m a t e r i a l l y f r o m t h e r e s u l t s e x p r e s s e d i n t h e s t a t e m e n t s . A m o n g t h e k e y f a c t o r s t h a t c o u l d c a u s e a c t u a lr e s u l t s t o d i f f e r m a t e r i a l l y f r o m t h o s e p r o j e c t e d i n t h e f o r w a r d - l o o k i n g s t a t e m e n t s a r e t h e f o l l o w i n g : t h e p a r t i e s ’ a b i l i t y t o c o n s u m m a t e t h e T r a n s a c t i o n ; t h e c o n d i t i o n s t o t h e c o m p l e t i o n o f t h e T r a n s a c t i o n , i n c l u d i n g t h e r e c e i p t o f a p p r o v a l o f b o t h A T K ’ s s t o c k h o l d e r s a n d O r b i t a l ’ s s t o c k h o l d e r s ; t h e r e g u l a t o r y a p p r o v a l s r e q u i r e d f o r t h e T r a n s a c t i o n n o t b e i n g o b t a i n e d o n t h e t e r m s e x p e c t e d o r o n t h e a n t i c i p a t e d s c h e d u l e ; t h e p a r t i e s ’ a b i l i t y t o m e e t e x p e c t a t i o n s r e g a r d i n g t h e t i m i n g , c o m p l e t i o n a n d a c c o u n t i n g a n d t a x t r e a t m e n t s o f t h e T r a n s a c t i o n ; t h e p o s s i b i l i t y t h a t t h e p a r t i e s m a y b e u n a b l e t o a c h i e v e e x p e c t e d s y n e r g i e s a n d o p e r a t i n g e f f i c i e n c i e s i n c o n n e c t i o n w i t h t h e T r a n s a c t i o n w i t h i n t h e e x p e c t e d t i m e - f r a m e s o r a t a l l a n d t o s u c c e s s f u l l y i n t e g r a t eO r b i t a l ’ s o p e r a t i o n s w i t h t h o s e o f t h e A T K A e r o s p a c e & D e f e n s e ( “ A T K A & D ” ) ; t h e i n t e g r a t i o n o f O r b i t a l ’ s o p e r a t i o n s w i t h t h o s e o f A T K A & D b e i n g m o r e d i f f i c u l t , t i m e - c o n s u m i n g o r c o s t l y t h a n e x p e c t e d ; o p e r a t i n g c o s t s , c u s t o m e r l o s s a n d b u s i n e s s d i s r u p t i o n ( i n c l u d i n g , w i t h o u t l i m i t a t i o n , d i f f i c u l t i e s i n m a i n t a i n i n g r e l a t i o n s h i p s w i t h e m p l o y e e s , c u s t o m e r s , c l i e n t s o r s u p p l i e r s ) b e i n g g r e a t e r t h a n e x p e c t e d f o l l o w i n g t h e T r a n s a c t i o n ; t h e r e t e n t i o n o f c e r t a i n k e y e m p l o y e e s b e i n g d i f f i c u l t ; S p o r t i n g ’ s a b i l i t y t o o p e r a t e s u c c e s s f u l l y a s a s t a n d a l o n e b u s i n e s s ; S p o r t i n g ’ s , A T K ’ s a n d O r b i t a l ’ s a b i l i t y t o a d a p t i t s s e r v i c e s t o c h a n g e s i n t e c h n o l o g y o r t h e m a r k e t p l a c e ; S p o r t i n g ’ s , A T K ’ s a n d O r b i t a l ’ s a b i l i t y t o m a i n t a i n a n d g r o w i t s r e l a t i o n s h i p w i t h i t sc u s t o m e r s ; r e d u c t i o n s o r c h a n g e s i n N A S A o r U . S . G o v e r n m e n t m i l i t a r y s p e n d i n g , t i m i n g o f p a y m e n t s a n d b u d g e t a r y p o l i c i e s , i n c l u d i n g i m p a c t s o f s e q u e s t r a t i o n u n d e r t h e B u d g e t C o n t r o l A c t o f 2 0 1 1 , a n d s o u r c i n g s t r a t e g i e s ; i n t e n s e c o m p e t i t i o n ; i n c r e a s e s i n c o s t s , w h i c h t h e b u s i n e s s m a y n o t b e a b l e t o r e a c t t o d u e t o t h e n a t u r e o f U . S . G o v e r n m e n t c o n t r a c t s ; c h a n g e s i n c o s t a n d r e v e n u e e s t i m a t e s a n d / o r t i m i n g o f p r o g r a m s ; t h e p o t e n t i a l t e r m i n a t i o n o f U . S . G o v e r n m e n t c o n t r a c t s a n d t h e p o t e n t i a l i n a b i l i t y t o r e c o v e r t e r m i n a t i o n c o s t s ; r e d u c t i o n o r c h a n g e i n d e m a n d f o r c o m m e r c i a l a m m u n i t i o n , f i r e a r m s o r a c c e s s o r i e s , i n c l u d i n g t h e r i s k t h a t p l a c e d o r d e r s e x c e e d a c t u a l c u s t o m e r r e q u i r e m e n t s ; r i s k s a s s o c i a t e d w i t h e x p a n s i o n i n t o c o m m e r c i a l m a r k e t s ;a c t u a l p e n s i o n a n d o t h e r p o s t r e t i r e m e n t p l a n a s s e t r e t u r n s a n d a s s u m p t i o n s r e g a r d i n g f u t u r e r e t u r n s , d i s c o u n t r a t e s , s e r v i c e c o s t s , m o r t a l i t y r a t e s , a n d h e a l t h c a r e c o s t t r e n d r a t e s ; g r e a t e r r i s k a s s o c i a t e d w i t h i n t e r n a t i o n a l b u s i n e s s , i n c l u d i n g f o r e i g n c u r r e n c y e x c h a n g e r a t e s a n d f l u c t u a t i o n s i n t h o s e r a t e s ; o t h e r r i s k s a s s o c i a t e d w i t h U . S . G o v e r n m e n t c o n t r a c t s t h a t m i g h t e x p o s e S p o r t i n g , A T K o r O r b i t a l t o a d v e r s e c o n s e q u e n c e s ; c o s t s o f s e r v i c i n g d e b t , i n c l u d i n g c a s h r e q u i r e m e n t s a n d i n t e r e s t r a t e f l u c t u a t i o n s ; s e c u r i t y t h r e a t s , i n c l u d i n g c y b e r s e c u r i t y a n d o t h e r i n d u s t r i a l a n d p h y s i c a l s e c u r i t y t h r e a t s , a n d o t h e r d i s r u p t i o n s ; s u p p l y , a v a i l a b i l i t y , a n d c o s t s o f r a w m a t e r i a l s a n d c o m p o n e n t s , i n c l u d i n g c o m m o d i t y p r i c ef l u c t u a t i o n s ; g o v e r n m e n t l a w s a n d o t h e r r u l e s a n d r e g u l a t i o n s a p p l i c a b l e t o S p o r t i n g , A T K a n d O r b i t a l , s u c h a s p r o c u r e m e n t a n d i m p o r t - e x p o r t c o n t r o l , a n d f e d e r a l a n d s t a t e f i r e a r m s a n d a m m u n i t i o n r e g u l a t i o n s ; t h e n o v a t i o n o f U . S . G o v e r n m e n t c o n t r a c t s ; p e r f o r m a n c e o f s u b c o n t r a c t o r s ; d e v e l o p m e n t o f k e y t e c h n o l o g i e s a n d r e t e n t i o n o f a q u a l i f i e d w o r k f o r c e ; f i r e s o r e x p l o s i o n s a t a n y o f S p o r t i n g ’ s , A T K ’ s o r O r b i t a l ’ s f a c i l i t i e s ; e n v i r o n m e n t a l l a w s t h a t g o v e r n p a s t p r a c t i c e s a n d r u l e s a n d r e g u l a t i o n s , n o n c o m p l i a n c e w i t h w h i c h m a y e x p o s e S p o r t i n g , A T K o r O r b i t a l t o a d v e r s e c o n s e q u e n c e s ; i m p a c t s o f f i n a n c i a l m a r k e t d i s r u p t i o n s o r v o l a t i l i t y t o c u s t o m e r s a n d v e n d o r s ; r e s u l t s o f a c q u i s i t i o n s o r o t h e r t r a n s a c t i o n s , i n c l u d i n g t h e a b i l i t y t os u c c e s s f u l l y i n t e g r a t e a c q u i r e d b u s i n e s s e s a n d r e a l i z e a n t i c i p a t e d s y n e r g i e s , c o s t s a v i n g s a n d o t h e r b e n e f i t s , a n d c o s t s i n c u r r e d f o r p u r s u i t s a n d p r o p o s e d a c q u i s i t i o n s t h a t h a v e n o t y e t o r m a y n o t c l o s e ; u n a n t i c i p a t e d c h a n g e s i n t h e t a x p r o v i s i o n o r e x p o s u r e t o a d d i t i o n a l t a x l i a b i l i t i e s ; a n d t h e c o s t s a n d u l t i m a t e o u t c o m e o f l i t i g a t i o n m a t t e r s a n d o t h e r l e g a l p r o c e e d i n g s . A d d i t i o n a l i n f o r m a t i o n c o n c e r n i n g t h e s e a n d o t h e r f a c t o r s c a n b e f o u n d i n A T K a n d O r b i t a l ’ s f i l i n g s w i t h t h e S e c u r i t i e s a n d E x c h a n g e C o m m i s s i o n ( t h e “ S E C ” ) , i n c l u d i n g A T K a n d O r b i t a l ’ s m o s t r e c e n t A n n u a l R e p o r t s o n F o r m 1 0 - K , Q u a r t e r l y R e p o r t s o n F o r m 1 0 - Q a n d C u r r e n t R e p o r t s o n F o r m 8 - K . A T K a n d O r b i t a l a s s u m e n o o b l i g a t i o n t o u p d a t e o r r e v i s e p u b l i c l y t h e i n f o r m a t i o n i nt h i s c o m m u n i c a t i o n , w h e t h e r a s a r e s u l t o f n e w i n f o r m a t i o n , f u t u r e e v e n t s o r o t h e r w i s e , e x c e p t a s o t h e r w i s e r e q u i r e d b y l a w . R e a d e r s a r e c a u t i o n e d n o t t o p l a c e u n d u e r e l i a n c e o n t h e s e f o r w a r d - l o o k i n g s t a t e m e n t s t h a t s p e a k o n l y a s o f t h e d a t e h e r e o f . A d d i t i o n a l I n f o r m a t i o n a n d W h e r e t o F i n d I t I n c o n n e c t i o n w i t h t h e p r o p o s e d “ M o r r i s T r u s t ” t r a n s a c t i o n b e t w e e n A T K a n d O r b i t a l , p u r s u a n t t o w h i c h S p o r t i n g w i l l b e d i s t r i b u t e d t o A T K ’ s s t o c k h o l d e r s a n d O r b i t a l w i l l m e r g e w i t h a s u b s i d i a r y o f A T K , w i t h O r b i t a l s u r v i v i n g t h e m e r g e r a s a w h o l l y - o w n e d s u b s i d i a r y o f A T K , A T K a n d O r b i t a l i n t e n d t o f i l e r e l e v a n t m a t e r i a l s w i t h t h e S e c u r i t i e s a n d E x c h a n g e C o m m i s s i o n ( t h e “ S E C ” ) , i n c l u d i n g a n A T K r e g i s t r a t i o n s t a t e m e n t o n F o r m S - 4 t h a t w i l l i n c l u d e a j o i n t p r o x y s t a t e m e n t o fA T K a n d O r b i t a l t h a t a l s o c o n s t i t u t e s a p r o s p e c t u s o f A T K . I n a d d i t i o n , S p o r t i n g , a s u b s i d i a r y o f A T K , i n t e n d s t o f i l e a r e g i s t r a t i o n s t a t e m e n t o n F o r m 1 0 o r S - 1 t h a t w i l l c o n s t i t u t e a p r o s p e c t u s o f S p o r t i n g . I N V E S T O R S A N D S E C U R I T Y H O L D E R S A R E U R G E D T O R E A D T H E J O I N T P R O X Y S T A T E M E N T A N D R E G I S T R A T I O N S T A T E M E N T S / P R O S P E C T U S E S A N D A N Y O T H E R R E L E V A N T D O C U M E N T S W H E N T H E Y B E C O M E A V A I L A B L E B E C A U S E T H E Y W I L L C O N T A I N I M P O R T A N T I N F O R M A T I O N A B O U T A T K , O R B I T A L , S P O R T I N G A N D T H E P R O P O S E D T R A N S A C T I O N . T h e j o i n t p r o x y s t a t e m e n t a n d r e g i s t r a t i o n s t a t e m e n t s / p r o s p e c t u s e s a n d o t h e r d o c u m e n t s r e l a t i n g t o t h e p r o p o s e d t r a n s a c t i o n ( w h e n t h e y a r e a v a i l a b l e ) c a n b e o b t a i n e d f r e e o f c h a r g e f r o m t h e S E C ’ s w e b s i t e a t w w w . s e c . g o v . T h e s e d o c u m e n t s ( w h e n t h e y a r e a v a i l a b l e )c a n a l s o b e o b t a i n e d f r e e o f c h a r g e f r o m A T K u p o n w r i t t e n r e q u e s t t o A T K b y e m a i l i n g i n v e s t o r . r e l a t i o n s @ a t k . c o m o r b y c a l l i n g M i c h a e l P i c i a t 7 0 3 - 4 1 2 - 3 2 1 6 o r f r o m O r b i t a l u p o n w r i t t e n r e q u e s t t o O r b i t a l a t i n v e s t o r . r e l a t i o n s @ o r b i t a l . c o m o r b y c a l l i n g B a r r o n B e n e s k i a t 7 0 3 - 4 0 6 - 5 5 2 8 .P a r t i c i p a n t s i n S o l i c i t a t i o n T h i s c o m m u n i c a t i o n i s n o t a s o l i c i t a t i o n o f a p r o x y f r o m a n y i n v e s t o r o r s e c u r i t y h o l d e r . H o w e v e r , A T K , O r b i t a l a n d c e r t a i n o f t h e i r r e s p e c t i v e d i r e c t o r s a n d e x e c u t i v e o f f i c e r s m a y b e d e e m e d t o b e p a r t i c i p a n t s i n t h e s o l i c i t a t i o n o f p r o x i e s i n c o n n e c t i o n w i t h t h e p r o p o s e d t r a n s a c t i o n u n d e r t h e r u l e s o f t h e S E C . I n f o r m a t i o n r e g a r d i n g A T K d i r e c t o r s a n d e x e c u t i v e o f f i c e r s m a y b e f o u n d i n i t s A n n u a l R e p o r t f o r t h e y e a r e n d e d M a r c h 3 1 , 2 0 1 3 o n F o r m 1 0 - K f i l e d w i t ht h e S E C o n M a y 2 3 , 2 0 1 3 a n d t h e d e f i n i t i v e p r o x y s t a t e m e n t r e l a t i n g t o i t s 2 0 1 3 A n n u a l M e e t i n g o f S t o c k h o l d e r s f i l e d w i t h t h e S E C o n J u n e 1 4 , 2 0 1 3 . I n f o r m a t i o n r e g a r d i n g O r b i t a l ’ s d i r e c t o r s a n d e x e c u t i v e o f f i c e r s m a y b e f o u n d i n i t s A n n u a l R e p o r t f o r t h e y e a r e n d e d D e c e m b e r 3 1 , 2 0 1 3 o n F o r m 1 0 - K f i l e d w i t h t h e S E C o n F e b r u a r y 2 5 , 2 0 1 4 a n d t h e d e f i n i t i v e p r o x y s t a t e m e n t r e l a t i n g t o i t s 2 0 1 4 A n n u a l M e e t i n g o f S t o c k h o l d e r s f i l e d w i t h t h e S E C o n M a r c h 1 1 , 2 0 1 4 . T h e s e d o c u m e n t s c a n b e o b t a i n e d f r e e o f c h a r g e f r o m t h e s o u r c e s i n d i c a t e d a b o v e . A d d i t i o n a l i n f o r m a t i o n r e g a r d i n g t h e i n t e r e s t s o f t h e s e p a r t i c i p a n t s w i l l a l s o b e i n c l u d e d i n t h e j o i n t p r o x y s t a t e m e n t / p r o s p e c t u s w h e n i t b e c o m e s a v a i l a b l e . N o n - S o l i c i t a t i o nT h i s c o m m u n i c a t i o n s h a l l n o t c o n s t i t u t e a n o f f e r t o s e l l o r t h es o l i c i t a t i o n o f a n o f f e r t o s e l l o r t h e s o l i c i t a t i o n o f a n o f f e r t o b u y a n y s e c u r i t i e s , n o r s h a l l t h e r e b e a n y s a l e o f s e c u r i t i e s i n a n y j u r i s d i c t i o n i n w h i c h s u c h o f f e r , s o l i c i t a t i o n o r s a l e w o u l d b e u n l a w f u l p r i o r t o r e g i s t r a t i o n o r q u a l i f i c a t i o n u n d e r t h e s e c u r i t i e s l a w s o f a n y s u c h j u r i s d i c t i o n . N o o f f e r o f s e c u r i t i e s s h a l l b e m a d e e x c e p t b y m e a n s o f a p r o s p e c t u s m e e t i n g t h e r e q u i r e m e n t s o f S e c t i o n 1 0 o f t h e S e c u r i t i e s A c t o f 1 9 3 3 , a s a m e n d e d .

T r a n s a c t i o n O v e r v i e w S t r u c t u r e a n d C o n s i d e r a t i o n A T K ’ s S p o r t i n g g r o u p t o b e d i s t r i b u t e d t o A T K s h a r e h o l d e r s i n a t a x - f r e e s p i n - o f f t r a n s a c t i o n S p i n - o f f w i l l b e i m m e d i a t e l y f o l l o w e d b y a t a x - f r e e , a l l - s t o c k m e r g e r - o f - e q u a l s b e t w e e n r e m a i n i n g A e r o s p a c e & D e f e n s e g r o u p s ( “ A T K A & D ” ) a n d O r b i t a l S c i e n c e s ( “ O r b i t a l ” ) T r a n s a c t i o n s t r u c t u r e d a s a M o r r i s T r u s t M e r g e d C o m p a n y C o m p a n y N a m e : O r b i t a l A T K ; L i s t i n g : N Y S E t i c k e r : O A H e a d q u a r t e r s : D u l l e s , V A ( c u r r e n t O r b i t a l h e a d q u a r t e r s ) O w n e r s h i p / C a p i t a l S t r u c t u r e A T K s h a r e h o l d e r s : A p p r o x i m a t e l y 5 3 . 8 % O r b i t a l s h a r e h o l d e r s : A p p r o x i m a t e l y 4 6 . 2 % A p p r o x i m a t e l y $ 1 . 4 B i n N e t D e b t a n t i c i p a t e d a t c l o s i n g B o a r d o f D i r e c t o r s G e n e r a l R o n a l d F o g l e m a n , U S A F ( R e t . ) , N o n - E x e c u t i v e C h a i r m a n B o a r dc o m p o s i t i o n o f 1 6 d i r e c t o r s w i t h 9 f r o m O r b i t a l a n d 7 f r o m A T K M a n a g e m e n t C E O : D a v i d T h o m p s o n , c u r r e n t O r b i t a l C h a i r m a n , P r e s i d e n t a n d C h i e f E x e c u t i v e O f f i c e r C O O : B l a k e L a r s o n , c u r r e n t A T K S e n i o r V i c e P r e s i d e n t a n d P r e s i d e n t o f A e r o s p a c e G r o u p C F O : G a r r e t t P i e r c e , c u r r e n t O r b i t a l V i c e C h a i r m a n a n d C h i e f F i n a n c i a l O f f i c e r C o n d i t i o n s a n d E x p e c t e d C l o s i n g E x p e c t e d t o c l o s e b y t h e e n d o f c a l e n d a r y e a r 2 0 1 4 S u b j e c t t o c u s t o m a r y c l o s i n g c o n d i t i o n s i n c l u d i n g r e g u l a t o r y a p p r o v a l s a n d t h e a p p r o v a l o f e a c h o f A T K ’ s a n d O r b i t a l ’ s s h a r e h o l d e r s A T K a n d O r b i t a l w i l l c o n t i n u e t o o p e r a t e s e p a r a t e l y u n t i l t h e t r a n s a c t i o n c l o s e s

O v e r v i e w o f A T K A & D A e r o s p a c e D e f e n s e L e a d e r i n s p a c e p r o p u l s i o n a n d k e y s u p p l i e r o f d e f e n s e , s p a c e a n d c o m m e r c i a l a e r o s p a c e s o l u t i o n s N A S A s p a c e e x p l o r a t i o n G l o b a l l e a d e r i n a r m a m e n t s a n d k e y s u p p l i e r o f m i s s i l e c o m p o n e n t s a n d s y s t e m s S m a l l - , m e d i u m - a n d l a r g e - c a l i b e r a m m u n i t i o n S t r a t e g i c a n d m i s s i l e d e f e n s e p r o p u l s i o n C o m m e r c i a l s p a c e C o m p o s i t e a e r o s t r u c t u r e s S p a c e c r a f t c o m p o n e n t s a n d s m a l l s a t e l l i t e s A d v a n c e d w e a p o n s M e d i u m - c a l i b e r g u n s y s t e m s M i s s i l e s y s t e m s , s u b - s y s t e m s a n d c o m p o n e n t s A d v a n c e d p r o p u l s i o n a n d c o n t r o l s D e f e n s e e l e c t r o n i c s a n d m i s s i o n a i r c r a f t L T M 1 2 / 3 1 / 1 3 S a l e s : $ 1 . 9 B L T M 1 2 / 3 1 / 1 3 E B I T M a r g i n * : ~ 1 2 % L T M 1 2 / 3 1 / 1 3 S a l e s : $ 1 . 3 B L T M 1 2 / 3 1 / 1 3 E B I T M a r g i n * : ~ 1 1 % C o m m e r c i a l A e r o s p a c e S a t e l l i t e s , S a t e l l i t eC o m p o n e n t s & S u b s y s t e m s S m a l l - , M e d - , L a r g e - C a l i b e r A m m u n i t i o n P r e c i s i o n - G u i d e d M u n i t i o n s , F u z i n g , W a r h e a d s H u m a n S p a c e E x p l o r a t i o n S a t e l l i t e & S t r a t e g i c L a u n c h S t r i k e W e a p o n s & M i s s i l e W a r n i n g S y s t e m s F a c i l i t y M a n a g e m e n t * A l l f i g u r e s a r e u n a u d i t e d . E B I T M a r g i n e x c l u d e s a p p r o x i m a t e l y $ 2 0 M o f A T K u n a l l o c a t e d c o r p o r a t e E B I T .

O v e r v i e w o f O r b i t a l O v e r v i e w D e v e l o p s a n d m a n u f a c t u r e s s m a l l - a n d m e d i u m - c l a s s r o c k e t s a n d s p a c e s y s t e m s O p e r a t e s t h r o u g h t h r e e s e g m e n t s : S a t e l l i t e s & S p a c e S y s t e m s : D e v e l o p s a n d p r o d u c e s c o m m u n i c a t i o n s s a t e l l i t e s f o r c o m m e r c i a l c u s t o m e r s a r o u n d t h e w o r l d ; s c i e n c e , t e c h n o l o g y a n d e n v i r o n m e n t a l s p a c e c r a f t p r i m a r i l y f o r U . S . c i v i l g o v e r n m e n t a g e n c i e s , a n d d e e p s p a c e e x p l o r a t i o n s p a c e c r a f t f o r N A S A . V e h i c l e s : D e v e l o p s L a u n c h p r o d u c e s s m a l l - m e d i u m - c l a s s s p a c e l a u n c h v e h i c l e s t h a t p l a c e s a t e l l i t e s i n t o o r b i t ; i n t e r c e p t o r a n d t a r g e t l a u n c h v e h i c l e s f o r m i s s i l e d e f e n s e a p p l i c a t i o n s , a n d s m a l l e r s u b o r b i t a l r e s e a r c h r o c k e t s f o r s c i e n t i f i c m i s s i o n s . A d v a n c e d S p a c e P r o g r a m s : D e v e l o p s a n d p r o d u c e s h u m a n - r a t e d s p a c e s y s t e m s t ob e u s e d i n E a r t h o r b i t , p l a n e t a r y , a n d o t h e r e x p l o r a t i o n s p a c e m i s s i o n s ; a d v a n c e d f l i g h t s y s t e m s u s i n g n e w l y d e v e l o p e d t e c h n o l o g i e s ; s p a c e c r a f t f o r U . S . n a t i o n a l s e c u r i t y s p a c e m i s s i o n s O v e r 1 , 0 5 0 s a t e l l i t e s a n d l a u n c h v e h i c l e s b u i l t o r o n c o n t r a c t f o r c u s t o m e r s 2 1 5 S a t e l l i t e s a n d S p a c e S y s t e m s 1 7 9 S p a c e a n d S t r a t e g i c L a u n c h V e h i c l e s 6 6 1 T a r g e t V e h i c l e s a n d R e s e a r c h R o c k e t s R e v e n u e s b y C u s t o m e r T y p e C o m m e r c i a l & I n t e r n a t i o n a l S a t e l l i t e O p e r a t o r s D e p a r t m e n t o f D e f e n s e & I n t e l l i g e n c e A g e n c i e s N A S A , O t h e r C i v i l i a n A g e n c i e s & U n i v e r s i t i e s F Y 2 0 1 3 A S a l e s $ 1 . 4 B F Y 2 0 1 3 A E B I T M a r g i n ~ 8 % R e p r e s e n t a t i v e C u s t o m e r s i r i d i u m B o e i n g J P L D I R E C T V N A S A I N T E L S A T S o u r c e : O r b i t a l F i l i n g s & M a n a g e m e n t

R a t i o n a l e : A U n i q u e C o m b i n a t i o n U n i q u e c o m b i n a t i o n b r i n g s t o g e t h e r t w o o f t h e A e r o s p a c e a n d D e f e n s e i n d u s t r y ’ s m o s t i n n o v a t i v e d e v e l o p e r s a n d c o s t - e f f i c i e n t m a n u f a c t u r e r s w h o h a v e w o r k e d c l o s e l y t o g e t h e r f o r o v e r 2 5 y e a r s S y n e r g y O p p o r t u n i t i e s : I n c r e a s e d c o m p e t i t i v e n e s s o n g o v e r n m e n t c o n t r a c t s C o m b i n e d c a p a b i l i t i e s i n s a t e l l i t e a n d l a u n c h v e h i c l e s y s t e m s i n c r e a s e s a b i l i t y t o c o m p e t e o n b r o a d e r s e t o f o p p o r t u n i t i e s S t r e n g t h e n e d c u s t o m e r r e l a t i o n s h i p s a n d r e a c h E n h a n c e d c o s t e f f e c t i v e n e s s V a l u e C r e a t i o n : M o r e d i v e r s e p o r t f o l i o o f p r o d u c t s A c c e l e r a t e d t e c h n o l o g i c a l i n n o v a t i o n I m p r o v e d e c o n o m i c s

O r b i t a l A T K B u s i n e s s O v e r v i e w C O M B I N E D O V E R V I E W S a l e s - $ 4 . 5 B E B I T M a r g i n - ~ 1 0 % N e t D e b t a t c l o s i n g - ~ $ 1 . 4 B E B I T D A * - $ 5 8 5 M S t r o n g F r e e C a s h F l o w a n d S o l i d B a l a n c e S h e e t S A L E S B Y S E G M E N T A e r o s p a c e D e f e n s e S A L E S B Y C U S T O M E R I n t e r n a t i o n a l & C o m m e r c i a l U . S . G o v ’ t A l l f i g u r e s a r e u n a u d i t e d . L T M 1 2 / 3 1 / 1 3 f o r A T K A e r o s p a c e & D e f e n s e G r o u p s a n d a s r e p o r t e d 1 2 / 3 1 / 1 3 O r b i t a l r e s u l t s . * N o n G A A P m e a s u r e s e e r e c o n c i l i a t i o n t a b l e

O r b i t a l A T K O v e r v i e w : A e r o s p a c e C o m b i n e d S a l e s - $ 2 . 6 B C o m b i n e d E B I T M a r g i n - ~ 1 0 % A l e a d e r i n s m a l l & m e d i u m c l a s s s a t e l l i t e s a n d l a u n c h v e h i c l e s K e y s u p p l i e r i n h i g h l y e n g i n e e r e d c o m p o s i t e s t r u c t u r e s I n t e g r a t e d l a u n c h v e h i c l e s y s t e m s I n t e g r a t e d s a t e l l i t e s y s t e m s P r o p u l s i o n f o r s p a c e e x p l o r a t i o n , c o m m e r c i a l l a u n c h v e h i c l e s , s t r a t e g i c a n d m i s s i l e d e f e n s e C o m p o s i t e s t r u c t u r e s f o r m i l i t a r y a n d c o m m e r c i a l a i r c r a f t S a t e l l i t e c o m p o n e n t s a n d s u b s y s t e m s S p a c e e n g i n e e r i n g s e r v i c e s L e a d e r i n l a u n c h v e h i c l e s y s t e m s a n d s e r v i c e s , i n t e g r a t e d s a t e l l i t e s y s t e m s , s p a c e p r o p u l s i o n , a n d a k e y s u p p l i e r o f s p a c e , d e f e n s e a n d c o m m e r c i a l a e r o s p a c e s o l u t i o n s A l l f i g u r e s a r e u n a u d i t e d . L T M 1 2 / 3 1 / 1 3 f o r A T K A e r o s p a c e & a s r e p o r t e d 1 2 / 3 1 / 1 3 O r b i t a lr e s u l t s . E B I T M a r g i n e x c l u d e s a p p r o x i m a t e l y $ 2 0 M o f A T K u n a l l o c a t e d c o r p o r a t e E B I T .

O r b i t a l A T K O v e r v i e w : D e f e n s e S a l e s - $ 1 . 9 B E B I T M a r g i n * - ~ 1 2 % W o r l d ’ s l a r g e s t p r o d u c e r o f a m m u n i t i o n I n t e r n a t i o n a l c a p a b i l i t i e s e x p a n d i n g S m a l l / m e d i u m / l a r g e - c a l i b e r a m m u n i t i o n M i s s i l e w a r n i n g a n d h o s t i l e f i r e d e t e c t i o n P r e c i s i o n - g u i d e d m u n i t i o n s P r o p u l s i o n , a d v a n c e d f u z i n g a n d w a r h e a d s M e d i u m - c a l i b e r g u n s y s t e m s D e f e n s e f a c i l i t y m a n a g e m e n t W e a p o n i z e d I S R s p e c i a l m i s s i o n a i r c r a f t I n d u s t r y l e a d e r i n a m m u n i t i o n , p r e c i s i o n a n d s t r i k e w e a p o n s , m i s s i l e w a r n i n g s o l u t i o n s , a n d t a c t i c a l r o c k e t m o t o r s a c r o s s a i r , s e a a n d l a n d - b a s e d s y s t e m s A l l f i g u r e s a r e u n a u d i t e d . L T M 1 2 / 3 1 / 1 3 f o r A T K D e f e n s e . E B I T M a r g i n e x c l u d e s a p p r o x i m a t e l y $ 2 0 M o f u n a l l o c a t e d A T K c o r p o r a t e E B I T

A n t i c i p a t e d S y n e r g i e s f o r O r b i t a l A T K I n t e g r a t i o n e f f o r t s f o c u s e d o n a c e n t r a l i z e d m a n a g e m e n t a p p r o a c h a n d c r o s s - f u n c t i o n a l i n t e g r a t i o n t e a m t o m a x i m i z e d e a l v a l u e F o c u s e d i n t e g r a t i o n s t r a t e g y w i l l a l l o w O r b i t a l A T K t o l e v e r a g e r e s p e c t i v e s t r e n g t h s a n d c a p a b i l i t i e s o f t w o l e a d i n g o r g a n i z a t i o n s ; o p t i m i z i n g k e y a c t i v i t i e s a c r o s s t h e b u s i n e s s w h i l e m i n i m i z i n g d i s r u p t i o n C o s t S y n e r g i e s * C o m b i n a t i o n e x p e c t e d t o g e n e r a t e p r e - t a x c o s t s y n e r g i e s o f ~ $ 7 0 - $ 1 0 0 M P a r t i a l s y n e r g i e s e x p e c t e d t o b e a c h i e v e d i n 2 0 1 5 , f u l l y r e a l i z e d s y n e r g i e s e x p e c t e d b y e n d o f 2 0 1 6 T h r e e c o r e b u c k e t s : E l i m i n a t i o n o f d u p l i c a t e p u b l i c c o m p a n y c o s t s E c o n o m i e s o f s c a l e A d d i t i o n a l o p e r a t i o n a l s t r e a m l i n i n g R e v e n u e S y n e r g i e s * C o m b i n a t i o n e x p e c t e d t o g e n e r a t e ~ $ 1 0 0 M - $ 2 0 0 M i nr e v e n u e s y n e r g i e s I m p r o v e d p r o d u c t o f f e r i n g s I m p r o v e d c o m p e t i t i v e n e s s S t r e n g t h e n e d c u s t o m e r r e l a t i o n s h i p s * O n c e f u l l y r e a l i z e d , a f t e r a c c o u n t i n g f o r t h e i m p a c t o f c o s t - t y p e g o v e r n m e n t p r o g r a m s , c o s t a n d r e v e n u e s y n e r g i e s a r e e x p e c t e d t o r e s u l t i n a n n u a l E B I T i m p r o v e m e n t o f b e t w e e n $ 4 0 - 6 5 m i l l i o n

C o m b i n e d R e s o u r c e s A v a i l a b l e O v e r 1 3 , 0 0 0 e m p l o y e e s d e d i c a t e d t o A e r o s p a c e a n d D e f e n s e b u s i n e s s 4 , 3 0 0 E n g i n e e r s a n d S c i e n t i s t s 7 , 4 5 0 M a n u f a c t u r i n g a n d O p e r a t i o n s S p e c i a l i s t s 1 , 4 0 0 M a n a g e m e n t a n d A d m i n i s t r a t i o n p e r s o n n e l F a c i l i t i e s i n 1 7 s t a t e s w i t h 1 9 . 6 M S q . f t . o f R & D , m a n u f a c t u r i n g , t e s t , o p e r a t i o n s a n d o f f i c e s p a c e 6 . 1 m i l l i o n o w n e d 5 . 4 m i l l i o n l e a s e d 8 . 1 m i l l i o n U . S . G o v e r n m e n t o w n

E x p e r i e n c e d a n d P r o v e n L e a d e r s h i p E x p e r i e n c e d a n d p r o v e n l e a d e r s h i p G e n . R o n a l d F o g l e m a n , U S A F ( R e t . ) N o n - E x e c u t i v e C h a i r m a n G e n e r a l F o g l e m a n s e r v e s a s n o n - e x e c u t i v e c h a i r m a n o f A T K ’ s b o a r d o f d i r e c t o r s . H e i s P r e s i d e n t o f B B a r J C a t t l e a n d C o n s u l t i n g C o . , a c o n s u l t i n g f i r m , a n d i s a d i r e c t o r o f A A R C o r p . F r o m 2 0 0 7 t o 2 0 0 9 , h e w a s a d i r e c t o r o f A l p h a S e c u r i t y G r o u p C o r p . D a v i d T h o m p s o n C h i e f E x e c u t i v e O f f i c e r M r . T h o m p s o n i s C h a i r m a n , P r e s i d e n t a n d C h i e f E x e c u t i v e O f f i c e r o f O r b i t a l , a c o m p a n y h e c o - f o u n d e d i n 1 9 8 2 . B e f o r e c o - f o u n d i n g O r b i t a l , M r . T h o m p s o n w a s s p e c i a l a s s i s t a n t t o t h e p r e s i d e n t o f H u g h e s A i r c r a f t C o m p a n y ’ s M i s s i l e S y s t e m s G r o u p a n d w a s a p r o j e c t m a n a g e r a n d e n g i n e e r o n a d v a n c e d r o c k e t e n g i n e s a t N A S A ’ s M a r s h a l l S p a c e F l i g h t C e n t e r .B l a k e L a r s o n C h i e f O p e r a t i n g O f f i c e r M r . L a r s o n i s S e n i o r V i c e P r e s i d e n t a n d P r e s i d e n t o f A T K ’ s A e r o s p a c e G r o u p . M r . L a r s o n p r e v i o u s l y s e r v e d a s E x e c u t i v e V i c e P r e s i d e n t o f A T K S p a c e S y s t e m s a n d A T K M i s s i o n S y s t e m s ; S e n i o r V i c e P r e s i d e n t o f A T K A d v a n c e d P r o p u l s i o n a n d S p a c e S y s t e m s G r o u p ; a n d V i c e P r e s i d e n t a n d G e n e r a l M a n a g e r o f A T K C o m p o s i t e s . G a r r e t t P i e r c e C h i e f F i n a n c i a l O f f i c e r M r . P i e r c e j o i n e d O r b i t a l i n A u g u s t 2 0 0 0 a s E x e c u t i v e V i c e P r e s i d e n t a n d C h i e f F i n a n c i a l O f f i c e r . I n A u g u s t 2 0 0 2 , h i s p o s i t i o n w a s e l e v a t e d t o V i c e C h a i r m a n a n d C h i e f F i n a n c i a l O f f i c e r . H e i s a l s o a m e m b e r o f t h e B o a r d o f D i r e c t o r s . P r i o r t o j o i n i n g O r b i t a l , M r . P i e r c e s e r v e d a s E x e c u t i v e V i c e P r e s i d e n t a n d C h i e f F i n a n c i a l O f f i c e r / C h i e f A d m i n i s t r a t i v e O f f i c e r f o r S e n s o r m a t i cE l e c t r o n i c s C o r p o r a t i o n . S o u r c e : P u b l i c f i l i n g s .

O r b i t a l A T K C a p i t a l S t r u c t u r e W e l l - p o s i t i o n e d t o g r o w a n d d e - l e v e r T o t a l n e t d e b t o f a p p r o x i m a t e l y $ 1 . 4 B a t c l o s i n g E s t i m a t e d s h a r e s o u t s t a n d i n g o f 6 0 M L e v e r a g e r a t i o i n l i n e w i t h A & D p e e r s S i g n i f i c a n t f r e e c a s h f l o w g e n e r a t i o n f r o m : C R S r e c e i v a b l e A e r o s t r u c t u r e r e c e i v a b l e C o m b i n a t i o n s y n e r g i e s O r b i t a l A T K C a p i t a l i z a t i o n ( $ B ) C a s h $ 0 . 3 T o t a l D e b t * $ 1 . 7 N e t D e b t $ 1 . 4 A s s u m e s c a p i t a l i z a t i o n a s o f e x p e c t e d c l o s i n g * T o t a l d e b t a s s u m e s $ 1 . 7 4 B o f e x i s t i n g A T K d e b t a n d a s s u m e s e x i s t i n g O r b i t a l d e b t i s r e t i r e d

K e y T i m i n g S u m m a r y M e r g e r A g r e e m e n t S i g n i n g T a r g e t C l o s i n g l a t e 2 0 1 4 P a r t i a l s y n e r g i e s e x p e c t e d t o b e a c h i e v e d 2 0 1 5 F u l l s y n e r g i e s e x p e c t e d t o b e r e a l i z e d e n d 2 0 1 6 U n i q u e c o m b i n a t i o n b u i l d i n g u p o n o u r e x i s t i n g l o n g s t a n d i n g r e l a t i o n s h i p t o d e l i v e r i n n o v a t i o n , e x c e l l e n c e a n d e n h a n c e d o p p o r t u n i t i e s t h a t d r i v e s h a r e h o l d e r v a l u e

T r a n s a c t i o n O v e r v i e w : W i r i n g D i a g r a m T r a n s a c t i o n S t e p s T o d a y S e p a r a t e p u b l i c c o m p a n i e s A T K f o c u s e d o n s p o r t i n g a n d A e r o s p a c e D e f e n s e , O r b i t a l f o c u s e d o n s p a c e A T K S h a r e h o l d e r s O R B S h a r e h o l d e r s A T K O r b i t a l S p o r t i n g A & D S t e p 1 S p i n S p o r t i n g o u t f r o m A T K A T K S h a r e h o l d e r s 1 0 0 % 1 0 0 % S p o r t i n g A T K O r b i t a l A & D S t e p 2 M e r g e r o f O r b i t a l w i t h A T K S u b s i d i a r y S p o r t i n g A T K O r b i t a l A & D M e r g e r S u b . M e r g e F u t u r e S e p a r a t e p u b l i c c o m p a n i e s N e w S p o r t i n g C o f o c u s e d o n s p o r t i n g O r b i t a l A T K f o c u s e d o n A & D ( i n c l u d i n g s p a c e ) A T K S h a r e h o l d e r s O R B S h a r e h o l d e r s 1 0 0 % 5 3 . 8 % 4 6 . 2 % S p o r t i n g O r b i t a l A T K A T K A & D O r b i t a l

N o n G A A P R e c o n c i l i a t i o n s E B I T D A E B I T D A i s a m e a s u r e u s e d b y m a n a g e m e n t t o m e a s u r e o p e r a t i n g p e r f o r m a n c e , d e f i n e d a s I n c o m e b e f o r e I n t e r e s t , I n c o m e t a x e s a n d n o n - c o n t r o l l i n g i n t e r e s t p l u s d e p r e c i a t i o n a n d a m o r t i z a t i o n . A T K b e l i e v e s t h e i n c l u s i o n o f E B I T D A i s a p p r o p r i a t e t o p r o v i d e a d d i t i o n a l i n f o r m a t i o n t o i n v e s t o r s a b o u t c e r t a i n m a t e r i a l n o n - c a s h i t e m s a n d a c q u i r e d E B I T D A d u r i n g t h e p e r i o d ( $ M ) A T K A & D T r a i l i n g 1 2 M o n t h s 1 2 / 3 1 / 2 0 1 3 ( u n a u d i t e d ) O r b i t a l A s R e p o r t e d 1 2 / 3 1 / 2 0 1 3 P u r c h a s e A c c o u n t i n g ( u n a u d i t e d ) C o m b i n e d O r b i t a l A T K A s o f 1 2 / 3 1 / 1 3 ( u n a u d i t e d ) E B I T $ 3 5 6 $ 1 1 4 ( $ 3 5 ) $ 4 3 5 A d d b a c k : D e p r e c i a t i o n & A m o r t i z a t i o n 7 4 4 1 3 5 1 5 0 E B I T D A 4 3 0 1 5 5 - 5 8 5 T h e f i n a n c i a l s p r o v i d e d a b o v e r e p r e s e n t A T K A e r o s p a c e a n d D e f e n s e S e g m e n t s a n d i n c l u d ec o r p o r a t e a l l o c a t i o n s t h a t w e r e b a s e d u p o n g o o d f a i t h e s t i m a t e s a n d j u d g m e n t s , w h i c h a l l o c a t i o n s m a y n o t n e c e s s a r i l y b e i n d i c a t i v e o f w h a t t h e a c t u a l a m o u n t s w o u l d b e i f t h e A e r o s p a c e a n d D e f e n s e G r o u p s w e r e i n d e p e n d e n t p u b l i c l y I n a d d i t i o n , c o r p o r a t e a l l o c a t i o n s m a y r e q u i r e a d j u s t m e n t S p o r t i n g f o r p u r p o s e s o f 1 6 t r a d e d c o m p a n i e s . r e s u l t i n g f r o m t h e a u d i t o f t h e F o r m S - 1 f o r t h e S p i n - o f f .

T h a n k Y o u

Exhibit 99.9

I n n o v a t i o n . . . D e l i v e r e d . A T K S p i n - o f f T r a n s a c t i o n P r e s e n t a t i o n : C r e a t i n g A S t a n d a l o n e C o m p a n y P o s i t i o n e d f o r S u c c e s s A p r i l 2 9 , 2 0 1 4 A T K

F o r w a r d - L o o k i n g S t a t e m e n t s A T K C a u t i o n a r y S t a t e m e n t R e g a r d i n g F o r w a r d - L o o k i n g S t a t e m e n t s C e r t a i n s t a t e m e n t s i n t h i s c o m m u n i c a t i o n r e g a r d i n g t h e p r o p o s e d “ M o r r i s T r u s t ” t r a n s a c t i o n b e t w e e n A T K a n d O r b i t a l , p u r s u a n t t o w h i c h t h e S p o r t i n g B u s i n e s s o f A T K ( “ S p o r t i n g ” ) w i l l b e d i s t r i b u t e d t o A T K ’ s s t o c k h o l d e r s a n d O r b i t a l w i l l m e r g e w i t h a s u b s i d i a r y o f A T K w i t h O r b i t a l s u r v i v i n g t h e m e r g e r a s a w h o l l y - o w n e d s u b s i d i a r y o f A T K ( t h e “ T r a n s a c t i o n ” ) , t h e e x p e c t e d t i m e t a b l e f o r c o m p l e t i n g t h e T r a n s a c t i o n , b e n e f i t s a n d s y n e r g i e s o f t h e T r a n s a c t i o n a n d t h e e x p e c t e d t a x t r e a t m e n t f o r t h eT r a n s a c t i o n , f u t u r e o p p o r t u n i t i e s f o r S p o r t i n g a n d t h e c o m b i n e d A T K / O r b i t a l ( “ c o m b i n e d c o m p a n y ” ) a n d p r o d u c t s a n d a n y o t h e r s t a t e m e n t s r e g a r d i n g S p o r t i n g ’ s , A T K ’ S , O r b i t a l ’ s a n d t h e c o m b i n e d c o m p a n y ’ s f u t u r e e x p e c t a t i o n s , b e l i e f s , p l a n s , o b j e c t i v e s , f i n a n c i a l c o n d i t i o n s , a s s u m p t i o n s o r f u t u r e e v e n t s o r p e r f o r m a n c e t h a t a r e n o t h i s t o r i c a l f a c t s a r e “ f o r w a r d - l o o k i n g ” s t a t e m e n t s m a d e w i t h i n t h e m e a n i n g o f S e c t i o n 2 1 E o f t h e S e c u r i t i e s E x c h a n g e A c t o f 1 9 3 4 . T h e s e s t a t e m e n t s a r e o f t e n , b u t n o t a l w a y s , m a d e t h r o u g h t h e u s e o f w o r d s o r p h r a s e s s u c h a s “ m a y , ” “ w i l l , ” “ e x p e c t e d , ” “ i n t e n d , ”“ e s t i m a t e , ” “ a n t i c i p a t e , ” “ b e l i e v e , ” “ p r o j e c t , ” o r “ c o n t i n u e , ” a n d s i m i l a r e x p r e s s i o n s . A l l s u c h f o r w a r d - l o o k i n g s t a t e m e n t s i n v o l v e e s t i m a t e s a n d a s s u m p t i o n s t h a t a r e s u b j e c t t o r i s k s , u n c e r t a i n t i e s a n d o t h e r f a c t o r s t h a t c o u l d c a u s e a c t u a l r e s u l t s t o d i f f e r m a t e r i a l l y f r o m t h e r e s u l t s e x p r e s s e d i n t h e s t a t e m e n t s . A m o n g t h e k e y f a c t o r s t h a t c o u l d c a u s e a c t u a l r e s u l t s t o d i f f e r m a t e r i a l l y f r o m t h o s e p r o j e c t e d i n t h e f o r w a r d - l o o k i n g s t a t e m e n t s a r e t h e f o l l o w i n g : t h e p a r t i e s ’ a b i l i t y t o c o n s u m m a t e t h e T r a n s a c t i o n ; t h e c o n d i t i o n s t o t h e c o m p l e t i o n o f t h e T r a n s a c t i o n , i n c l u d i n g t h e r e c e i p t o fa p p r o v a l o f b o t h A T K ’ s s t o c k h o l d e r s a n d O r b i t a l ’ s s t o c k h o l d e r s ; t h e r e g u l a t o r y a p p r o v a l s r e q u i r e d f o r t h e T r a n s a c t i o n n o t b e i n g o b t a i n e d o n t h e t e r m s e x p e c t e d o r o n t h e a n t i c i p a t e d s c h e d u l e ; t h e p a r t i e s ’ a b i l i t y t o m e e t e x p e c t a t i o n s r e g a r d i n g t h e t i m i n g , c o m p l e t i o n a n d a c c o u n t i n g a n d t a x t r e a t m e n t s o f t h e T r a n s a c t i o n ; t h e p o s s i b i l i t y t h a t t h e p a r t i e s m a y b e u n a b l e t o a c h i e v e e x p e c t e d s y n e r g i e s a n d o p e r a t i n g e f f i c i e n c i e s i n c o n n e c t i o n w i t h t h e T r a n s a c t i o n w i t h i n t h e e x p e c t e d t i m e - f r a m e s o r a t a l l a n d t o s u c c e s s f u l l y i n t e g r a t e O r b i t a l ’ s o p e r a t i o n s w i t h t h o s e o f t h e A T K A & D ; t h e i n t e g r a t i o n o f O r b i t a l ’ s o p e r a t i o n sw i t h t h o s e o f A T K A e r o s p a c e & D e f e n s e o p e r a t i o n s ( “ A T K A & D ” ) b e i n g m o r e d i f f i c u l t , t i m e - c o n s u m i n g o r c o s t l y t h a n e x p e c t e d ; o p e r a t i n g c o s t s , c u s t o m e r l o s s a n d b u s i n e s s d i s r u p t i o n ( i n c l u d i n g , w i t h o u t l i m i t a t i o n , d i f f i c u l t i e s i n m a i n t a i n i n g r e l a t i o n s h i p s w i t h e m p l o y e e s , c u s t o m e r s , c l i e n t s o r s u p p l i e r s ) b e i n g g r e a t e r t h a n e x p e c t e d f o l l o w i n g t h e T r a n s a c t i o n ; t h e r e t e n t i o n o f c e r t a i n k e y e m p l o y e e s b e i n g d i f f i c u l t ; S p o r t i n g ’ s a b i l i t y t o o p e r a t e s u c c e s s f u l l y a s a s t a n d a l o n e b u s i n e s s ; S p o r t i n g ’ s , A T K ’ s a n d O r b i t a l ’ s a b i l i t y t o a d a p t i t s s e r v i c e s t o c h a n g e s i n t e c h n o l o g y o r t h e m a r k e t p l a c e ; S p o r t i n g ’ s , A T K ’ s a n dO r b i t a l ’ s a b i l i t y t o m a i n t a i n a n d g r o w i t s r e l a t i o n s h i p w i t h i t s c u s t o m e r s ; r e d u c t i o n s o r c h a n g e s i n N A S A o r U . S . G o v e r n m e n t m i l i t a r y s p e n d i n g , t i m i n g o f p a y m e n t s a n d b u d g e t a r y p o l i c i e s , i n c l u d i n g i m p a c t s o f s e q u e s t r a t i o n u n d e r t h e B u d g e t C o n t r o l A c t o f 2 0 1 1 , a n d s o u r c i n g s t r a t e g i e s ; i n t e n s e c o m p e t i t i o n ; i n c r e a s e s i n c o s t s , w h i c h t h e b u s i n e s s m a y n o t b e a b l e t o r e a c t t o d u e t o t h e n a t u r e o f U . S . G o v e r n m e n t c o n t r a c t s ; c h a n g e s i n c o s t a n d r e v e n u e e s t i m a t e s a n d / o r t i m i n g o f p r o g r a m s ; t h e p o t e n t i a l t e r m i n a t i o n o f U . S . G o v e r n m e n t c o n t r a c t s a n d t h e p o t e n t i a l i n a b i l i t y t o r e c o v e r t e r m i n a t i o n c o s t s ; r e d u c t i o n o rc h a n g e i n d e m a n d f o r c o m m e r c i a l a m m u n i t i o n , f i r e a r m s o r a c c e s s o r i e s , i n c l u d i n g t h e r i s k t h a t p l a c e d o r d e r s e x c e e d a c t u a l c u s t o m e r r e q u i r e m e n t s ; r i s k s a s s o c i a t e d w i t h e x p a n s i o n i n t o c o m m e r c i a l m a r k e t s ; a c t u a l p e n s i o n a n d o t h e r p o s t r e t i r e m e n t p l a n a s s e t r e t u r n s a n d a s s u m p t i o n s r e g a r d i n g f u t u r e r e t u r n s , d i s c o u n t r a t e s , s e r v i c e c o s t s , m o r t a l i t y r a t e s , a n d h e a l t h c a r e c o s t t r e n d r a t e s ; g r e a t e r r i s k a s s o c i a t e d w i t h i n t e r n a t i o n a l b u s i n e s s , i n c l u d i n g f o r e i g n c u r r e n c y e x c h a n g e r a t e s a n d f l u c t u a t i o n s i n t h o s e r a t e s ; o t h e r r i s k s a s s o c i a t e d w i t h U . S . G o v e r n m e n t c o n t r a c t s t h a t m i g h t e x p o s e S p o r t i n g ,A T K o r O r b i t a l t o a d v e r s e c o n s e q u e n c e s ; c o s t s o f s e r v i c i n g d e b t , i n c l u d i n g c a s h r e q u i r e m e n t s a n d i n t e r e s t r a t e f l u c t u a t i o n s ; s e c u r i t y t h r e a t s , i n c l u d i n g c y b e r s e c u r i t y a n d o t h e r i n d u s t r i a l a n d p h y s i c a l s e c u r i t y t h r e a t s , a n d o t h e r d i s r u p t i o n s ; s u p p l y , a v a i l a b i l i t y , a n d c o s t s o f r a w m a t e r i a l s a n d c o m p o n e n t s , i n c l u d i n g c o m m o d i t y p r i c e f l u c t u a t i o n s ; g o v e r n m e n t l a w s a n d o t h e r r u l e s a n d r e g u l a t i o n s a p p l i c a b l e t o S p o r t i n g , A T K a n d O r b i t a l , s u c h a s p r o c u r e m e n t a n d i m p o r t - e x p o r t c o n t r o l , a n d f e d e r a l a n d s t a t e f i r e a r m s a n d a m m u n i t i o n r e g u l a t i o n s ; t h e n o v a t i o n o f U . S . G o v e r n m e n t c o n t r a c t s ;p e r f o r m a n c e o f s u b c o n t r a c t o r s ; d e v e l o p m e n t o f k e y t e c h n o l o g i e s a n d r e t e n t i o n o f a q u a l i f i e d w o r k f o r c e ; f i r e s o r e x p l o s i o n s a t a n y o f S p o r t i n g ’ s , A T K ’ s o r O r b i t a l ’ s f a c i l i t i e s ; e n v i r o n m e n t a l l a w s t h a t g o v e r n p a s t p r a c t i c e s a n d r u l e s a n d r e g u l a t i o n s , n o n c o m p l i a n c e w i t h w h i c h m a y e x p o s e S p o r t i n g , A T K o r O r b i t a l t o a d v e r s e c o n s e q u e n c e s ; i m p a c t s o f f i n a n c i a l m a r k e t d i s r u p t i o n s o r v o l a t i l i t y t o c u s t o m e r s a n d v e n d o r s ; r e s u l t s o f a c q u i s i t i o n s o r o t h e r t r a n s a c t i o n s , i n c l u d i n g t h e a b i l i t y t o s u c c e s s f u l l y i n t e g r a t e a c q u i r e d b u s i n e s s e s a n d r e a l i z e a n t i c i p a t e d s y n e r g i e s , c o s t s a v i n g s a n d o t h e r b e n e f i t s , a n d c o s t si n c u r r e d f o r p u r s u i t s a n d p r o p o s e d a c q u i s i t i o n s t h a t h a v e n o t y e t o r m a y n o t c l o s e ; u n a n t i c i p a t e d c h a n g e s i n t h e t a x p r o v i s i o n o r e x p o s u r e t o a d d i t i o n a l t a x l i a b i l i t i e s ; a n d t h e c o s t s a n d u l t i m a t e o u t c o m e o f l i t i g a t i o n m a t t e r s a n d o t h e r l e g a l p r o c e e d i n g s . A d d i t i o n a l i n f o r m a t i o n c o n c e r n i n g t h e s e a n d o t h e r f a c t o r s c a n b e f o u n d i n A T K a n d O r b i t a l ’ s f i l i n g s w i t h t h e S e c u r i t i e s a n d E x c h a n g e C o m m i s s i o n ( t h e “ S E C ” ) , i n c l u d i n g A T K a n d O r b i t a l ’ s m o s t r e c e n t A n n u a l R e p o r t s o n F o r m 1 0 - K , Q u a r t e r l y R e p o r t s o n F o r m 1 0 - Q a n d C u r r e n t R e p o r t s o n F o r m 8 - K . A T K a n d O r b i t a l a s s u m e n o o b l i g a t i o n t ou p d a t e o r r e v i s e p u b l i c l y t h e i n f o r m a t i o n i n t h i s c o m m u n i c a t i o n , w h e t h e r a s a r e s u l t o f n e w i n f o r m a t i o n , f u t u r e e v e n t s o r o t h e r w i s e , e x c e p t a s o t h e r w i s e r e q u i r e d b y l a w . R e a d e r s a r e c a u t i o n e d n o t t o p l a c e u n d u e r e l i a n c e o n t h e s e f o r w a r d - l o o k i n g s t a t e m e n t s t h a t s p e a k o n l y a s o f t h e d a t e h e r e o f . A d d i t i o n a l I n f o r m a t i o n a n d W h e r e t o F i n d I t I n c o n n e c t i o n w i t h t h e p r o p o s e d “ M o r r i s T r u s t ” t r a n s a c t i o n b e t w e e n A T K a n d O r b i t a l , p u r s u a n t t o w h i c h S p o r t i n g w i l l b e d i s t r i b u t e d t o A T K ’ s s t o c k h o l d e r s a n d O r b i t a l w i l l m e r g e w i t h a s u b s i d i a r y o f A T K , w i t h O r b i t a l s u r v i v i n g t h e m e r g e r a s a w h o l l y - o w n e ds u b s i d i a r y o f A T K , A T K a n d O r b i t a l i n t e n d t o f i l e r e l e v a n t m a t e r i a l s w i t h t h e S e c u r i t i e s a n d E x c h a n g e C o m m i s s i o n ( t h e “ S E C ” ) , i n c l u d i n g a n A T K r e g i s t r a t i o n s t a t e m e n t o n F o r m S - 4 t h a t w i l l i n c l u d e a j o i n t p r o x y s t a t e m e n t o f A T K a n d O r b i t a l t h a t a l s o c o n s t i t u t e s a p r o s p e c t u s o f A T K . I n a d d i t i o n , S p o r t i n g , a s u b s i d i a r y o f A T K , i n t e n d s t o f i l e a r e g i s t r a t i o n s t a t e m e n t o n F o r m 1 0 o r S - 1 t h a t w i l l c o n s t i t u t e a p r o s p e c t u s o f S p o r t i n g . I N V E S T O R S A N D S E C U R I T Y H O L D E R S A R E U R G E D T O R E A D T H E J O I N T P R O X Y S T A T E M E N T A N D R E G I S T R A T I O NS T A T E M E N T S / P R O S P E C T U S E S A N D A N Y O T H E R R E L E V A N T D O C U M E N T S W H E N T H E Y B E C O M E A V A I L A B L E B E C A U S E T H E Y W I L L C O N T A I N I M P O R T A N T I N F O R M A T I O N A B O U T A T K , O R B I T A L S P O R T I N G A N D T H E P R O P O S E D T R A N S A C T I O N . T h e j o i n t p r o x y s t a t e m e n t a n d r e g i s t r a t i o n s t a t e m e n t s / p r o s p e c t u s e s a n d o t h e r d o c u m e n t s r e l a t i n g t o t h e p r o p o s e d t r a n s a c t i o n ( w h e n t h e y a r e a v a i l a b l e ) c a n b e o b t a i n e d f r e e o f c h a r g e f r o m t h e S E C ’ s w e b s i t e a t w w w . s e c . g o v . T h e s e d o c u m e n t s ( w h e n t h e y a r e a v a i l a b l e ) c a n a l s o b e o b t a i n e d f r e e o f c h a r g e f r o m A T K u p o n w r i t t e n r e q u e s t t oA T K b y e m a i l i n g i n v e s t o r . r e l a t i o n s @ a t k . c o m o r b y c a l l i n g M i c h a e l P i c i a t 7 0 3 - 4 1 2 - 3 2 1 6 . P a r t i c i p a n t s i n S o l i c i t a t i o n T h i s c o m m u n i c a t i o n i s n o t a s o l i c i t a t i o n o f a p r o x y f r o m a n y i n v e s t o r o r s e c u r i t y h o l d e r . H o w e v e r , A T K , O r b i t a l a n d c e r t a i n o f t h e i r r e s p e c t i v e d i r e c t o r s a n d e x e c u t i v e o f f i c e r s m a y b e d e e m e d t o b e p a r t i c i p a n t s i n t h e s o l i c i t a t i o n o f p r o x i e s i n c o n n e c t i o n w i t h t h e p r o p o s e d t r a n s a c t i o n u n d e r t h e r u l e s o f t h e S E C . I n f o r m a t i o n r e g a r d i n g A T K d i r e c t o r s a n d e x e c u t i v e o f f i c e r s m a y b e f o u n d i n i t s A n n u a l R e p o r t f o r t h e y e a r e n d e d M a r c h 3 1 , 2 0 1 3 o n F o r m 1 0 - K f i l e d w i t h t h e S E C o n M a y 2 3 , 2 0 1 3a n d t h e d e f i n i t i v e p r o x y s t a t e m e n t r e l a t i n g t o i t s 2 0 1 3 A n n u a l M e e t i n g o f S t o c k h o l d e r s f i l e d w i t h t h e S E C o n J u n e 1 4 , 2 0 1 3 . I n f o r m a t i o n r e g a r d i n g O r b i t a l ’ s d i r e c t o r s a n d e x e c u t i v e o f f i c e r s m a y b e f o u n d i n i t s A n n u a l R e p o r t f o r t h e y e a r e n d e d D e c e m b e r 3 1 , 2 0 1 3 o n F o r m 1 0 - K f i l e d w i t h t h e S E C o n F e b r u a r y 2 5 , 2 0 1 4 a n d t h e d e f i n i t i v e p r o x y s t a t e m e n t r e l a t i n g t o i t s 2 0 1 4 A n n u a l M e e t i n g o f S t o c k h o l d e r s f i l e d w i t h t h e S E C o n M a r c h 1 1 , 2 0 1 4 . T h e s e d o c u m e n t s c a n b e o b t a i n e d f r e e o f c h a r g e f r o m t h e s o u r c e s i n d i c a t e d a b o v e . A d d i t i o n a l i n f o r m a t i o n r e g a r d i n g t h e i n t e r e s t s o f t h e s e p a r t i c i p a n t s w i l l a l s o b e i n c l u d e d i nt h e j o i n t p r o x y s t a t e m e n t / p r o s p e c t u s w h e n i t b e c o m e s a v a i l a b l e . N o n - S o l i c i t a t i o n T h i s c o m m u n i c a t i o n s h a l l n o t c o n s t i t u t e a n o f f e r t o s e l l o r t h e s o l i c i t a t i o n o f a n o f f e r t o s e l l o r t h e s o l i c i t a t i o n o f a n o f f e r t o b u y a n y s e c u r i t i e s , n o r s h a l l t h e r e b e a n y s a l e o f s e c u r i t i e s i n a n y j u r i s d i c t i o n i n w h i c h s u c h o f f e r , s o l i c i t a t i o n o r s a l e w o u l d b e u n l a w f u l p r i o r t o r e g i s t r a t i o n o r q u a l i f i c a t i o n u n d e r t h e s e c u r i t i e s l a w s o f a n y s u c h j u r i s d i c t i o n . N o o f f e r o f s e c u r i t i e s s h a l l b e m a d e e x c e p t b y m e a n s o f a p r o s p e c t u s m e e t i n g t h e r e q u i r e m e n t s o f S e c t i o n 1 0 o f t h e S e c u r i t i e s A c t o f 1 9 3 3 , a s a m e n d e d . A l l i a n tT e c h s y s t e m s R e s t r i c t e d

T r a n s a c t i o n O v e r v i e w A T K S t r u c t u r e a n d C o n s i d e r a t i o n C o m p a n y n a m e : T B D ; L i s t i n g : N Y S E ; t i c k e r : T B D H e a d q u a r t e r s : U t a h E m p l o y e e s : ~ 5 , 8 0 0 e m p l o y e e s i n 1 1 s t a t e s , C a n a d a , M e x i c o , P u e r t o R i c o , E u r o p e a n d A s i a S p o r t i n g C o m p a n y A T K ’ s S p o r t i n g g r o u p t o b e d i s t r i b u t e d o n a p r o r a t a b a s i s t o s h a r e h o l d e r s i n a t a x - f r e e s p i n - o f f t r a n s a c t i o n S p i n - o f f w i l l b e i m m e d i a t e l y f o l l o w e d b y a t a x - f r e e , a l l - s t o c k m e r g e r - o f - e q u a l s b e t w e e n r e m a i n i n g A e r o s p a c e & D e f e n s e g r o u p s ( “ A T K A & D ” ) a n d O r b i t a l S c i e n c e s ( “ O r b i t a l ” ) T r a n s a c t i o n s t r u c t u r e d a s a M o r r i s T r u s t B o a r d o f D i r e c t o r s M a r k D e Y o u n g a sC h a i r m a n & C E O B o a r d c o m p o s i t i o n t o b e d e t e r m i n e d M a n a g e m e n t C E O : M a r k D e Y o u n g , c u r r e n t A T K C h i e f E x e c u t i v e O f f i c e r C o n d i t i n o s a n d E x p e c t e d C l o s i n g E x p e c t e d t o c l o s e b y t h e e n d o f c a l e n d a r y e a r 2 0 1 4 S u b j e c t t o c u s t o m a r y c l o s i n g c o n d i t i o n s i n c l u d i n g r e g u l a t o r y a p p r o v a l s a n d t h e a p p r o v a l o f e a c h o f A T K ’ s a n d O r b i t a l ' s s h a r e h o l d e r s f o r M e r g e r – o f - E q u a l s t r a n s a c t i o n A T K a n d O r b i t a l w i l l c o n t i n u e t o o p e r a t e s e p a r a t e l y u n t i l t h e t r a n s a c t i o n c l o s e s A l l i a n t T e c h s y s t e m s R e s t r i c t e d

T w o S t a n d a l o n e C o m p a n i e s P o s i t i o n e d f o r S u c c e s s A T K Sport ing A w o r l d l e a d e r i n S p o r t i n g a m m u n i t i o n , a c c e s s o r i e s a n d s p o r t i n g a r m s f o r h u n t e r s , s h o o t i n g e n t h u s i a s t s a n d l a w e n f o r c e m e n t p r o f e s s i o n a l s w i t h l e a d i n g c o n s u m e r b r a n d s a n d u n p a r a l l e l e d d i s t r i b u t i o n i n a g r o w i n g m a r k e t A T K A e r o s p a c e & D e f e n s e A f o c u s e d l e a d e r i n A e r o s p a c e & D e f e n s e , w i t h a d v a n c e d c a p a b i l i t i e s a n d a c o m m i t m e n t t o c o n t i n u o u s i n n o v a t i o n t o s u p p o r t U . S . a n d a l l i e d m i l i t a r y r e q u i r e m e n t s , s p a c e m i s s i o n s , a n d a e r o s p a c e c a p a b i l i t i e s C o m p e l l i n g o p p o r t u n i t y t o d e l i v e r v a l u e f o r s h a r e h o l d e r s a n d b u i l d c o m p e t i t i v e ,f o c u s e d e n t e r p r i s e s w i t h e n h a n c e d o p p o r t u n i t i e s i n c u r r e n t , a d j a c e n t a n d n e w m a r k e t s A p p r o x i m a t e l y $ 2 . 2 B i l l i o n i n s a l e s L T M 1 2 / 3 1 / 1 3 A p p r o x i m a t e l y $ 3 . 2 B i l l i o n i n s a l e s L T M 1 2 / 3 1 / 1 3 * R e v e n u e p r o j e c t i o n s r e f l e c t e d “ a s i f ” t h e s p i n t r a n s a c t i o n h a d o c c u r r e d o n 1 / 1 / 1 3 a n d a s s u m e s f u l l y e a r S a v a g e a n d B u s h n e l l r e s u l t s . C o m p e l l i n g o p p o r t u n i t y t o d e l i v e r v a l u e f o r s h a r e h o l d e r s a n d b u i l d c o m p e t i t i v e , f o c u s e d e n t e r p r i s e s w i t h e n h a n c e d o p p o r t u n i t i e s i n c u r r e n t , a d j a c e n t a n d n e w m a r k e t s A l l i a n t T e c h s y s t e m s R e s t r i c t e d

N e w S p o r t i n g H i s t o r y A T K 1 9 9 9 A c q u i s i t i o n o f B l o u n t I n t e r n a t i o n a l I n c . A m m u n i t i o n B u s i n e s s 2 0 0 1 A c q u i s i t i o n o f E a g l e I n d u s t r i e s 2 0 0 9 A c q u i s i t i o n o f B L A C K H A W K ! 2 0 1 0 A c q u i s i t i o n o f C a l i b e r C o m p a n y ( S a v a g e ) 2 0 1 3 A c q u i s i t i o n o f B u s h n e l l G r o u p H o l d i n g s 2 0 1 3 A T K 2 0 1 3 N e w S p o r t i n g C o m p a n y 2 0 1 4 A T K i s a r e g i s t e r e d t r a d e m a r k o f A l l i a n t T e c h s y s t e m s I n c . A l l i a n t T e c h s y s t e m s R e s t r i c t e d

S p o r t i n g A T K S a l e s * - $ 2 . 2 B E B I T m a r g i n * - ~ 1 3 % O r g a n i c g r o w t h 1 4 % s i n c e 2 0 0 3 A t t r a c t i v e f r e e c a s h f l o w * L T M 1 2 / 3 1 / 1 3 a n d a s s u m e F Y o f S a v a g e & B u s h n e l l H u n t i n g a n d s h o o t i n g s p o r t s a m m u n i t i o n L a w e n f o r c e m e n t a n d s e c u r i t y f o r c e s a m m u n i t i o n H u n t i n g , s h o o t i n g s p o r t s , a n d o u t d o o r r e c r e a t i o n a c c e s s o r i e s T r a d i t i o n a l c e n t e r f i r e a n d r i m f i r e r i f l e s , a n d s h o t g u n s T a c t i c a l a c c e s s o r i e s f o r m i l i t a r y , l a w e n f o r c e m e n t a n d s e c u r i t y m a r k e t s G u n p o w d e r f o r a m m u n i t i o n a n d r e - l o a d e r s A l l i a n t T e c h s y s t e m s R e s t r i c t e d

A l l i a n t T e c h s y s t e m s R e s t r i c t e d S p o r t i n g P o r t f o l i o & P r o d u c t O v e r v i e w A T K C a t e g o r y R e p r e s e n t a t i v e B r a n d s R e p r e s e n a t i v e P r o d u c t s A m m u n i t i o n S p o r t i n g A r m s A c c e s s o r i e s G o l f R a n g e f i n d e r s H u n t i n g R a n g e f i n d e r s B i n o c u l a r s R i f l e s c o p e s T r a i l C a m e r a s G P S S p o t t i n g S c o p e s P o r t a b l e P o w e r N i g h t V i s i o n S c o p e C o v e r s G a m e C a l l s G u n C a r e B l i n d s H o l s t e r s A r c h e r y A c c e s s o r i e s S k i H e l m e t s S u n g l a s s e s S a f e t y G o g g l e s S k i G o g g l e s S a f e t y G l a s s e s

A W o r l d L e a d e r i n O u t d o o r R e c r e a t i o n P r o d u c t s A T K B e s t - i n - C l a s s E x p e r i e n c e d L e a d e r s I n n o v a t i v e P r o d u c t s H u n t i n g R a n g e f i n d e r s G o l f R a n g e f i n d e r s N i g h t V i s i o n S k i H e l m e t s U n m a t c h e d D i s t r i b u t i o n S c a l e A d v a n t a g e s & C o n t i n u o u s I m p r o v e m e n t / P E S L e a d i n g B r a n d s A l l i a n t T e c h s y s t e m s R e s t r i c t e d

S p o r t i n g B u s i n e s s O v e r v i e w A T K O V E R V I E W S a l e s - $ 2 . 2 B A d j u s t e d E B I T M a r g i n - ~ 1 3 % A d j u s t e d E B I T D A * - $ 3 6 1 M C o m m i t t e d f i n a n c i n g i n p l a c e E s t i m a t e d d e b t ~ $ 3 0 0 - $ 3 5 0 M w i t h a p p r o x i m a t e l y $ 4 0 0 - $ 4 5 0 M i n a d d i t i o n a l l i q u i d i t y * N o n - G A A P m e a s u r e s e e r e c o n c i l i a t i o n t a b l e L T M 1 2 / 3 1 / 1 3 a n d a s s u m e s f u l l y e a r o f S a v a g e & B u s h n e l l S A L E S B Y S E G M E N T ( L T M 1 2 / 3 1 / 1 3 ) F i r e a r m s A c c e s s o r i e s A m m u n i t i o n S A L E S B Y C U S T O M E R ( L T M 1 2 / 3 1 / 1 3 ) U . S . / L a w E n f o r c e m e n t C o n s u m e r A l l i a n t T e c h s y s t e m s R e s t r i c t e d

G r o w t h D r i v e r s = S u s t a i n a b l e F u t u r e G r o w t h A T K D e m o g r a p h i c S h i f t & M a r k e t A c c e p t a n c e D r i v e B a s e E x p a n s i o n N e w s h o o t e r s i n c r e a s e d 7 m i l l i o n f r o m 2 0 0 9 - 2 0 1 2 6 6 % o f n e w s h o o t e r p o p u l a t i o n i s a g e 1 8 - 3 4 W o m e n ' s p a r t i c i p a t i o n h a s g r o w n 2 7 % s i n c e 2 0 0 5 S h o o t i n g S p o r t s c o n t i n u e s t o e x p a n d i n m e d i a o u t l e t s N I C S I n c r e a s e d 1 1 % s i n c e 2 0 0 8 2 0 0 9 2 0 1 0 2 0 1 1 2 0 1 2 D i v e r s i f i e d P r o d u c t P o r t f o l i o A c c e s s o r i e s A m m u n i t i o n S p o r t i n g A r m s A d j a c e n t M a r k e t s & M & A O p p o r t u n i t i e s G o l f S k i i n g E y e w e a r O u t d o o r S p o r t s S u s t a i n a b l e F u t u r e G r o w t h S o u r c e : N S S F a n d F B I A d j u s t e d N I C S C A G R 2 0 0 8 – 2 0 1 3 , N e ws h o o t e r s d e f i n e d a s b e g a n s h o o t i n g w i t h i n l a s t 5 y e a r s A l l i a n t T e c h s y s t e m s R e s t r i c t e d

P r o p o s e d B u s i n e s s M o d e l A T K F a v o r a b l e A t t r i b u t e s : S t r o n g m a r k e t g r o w t h – I n s t a l l e d b a s e ( N I C S C h e c k s ) h a s g r o w n 1 1 % p e r a n n u m s i n c e 2 0 0 8 C o n s i s t e n t t r a c k r e c o r d o f y e a r - o v e r - y e a r o r g a n i c g r o w t h 1 0 % + S t r o n g p o r t f o l i o o f b r a n d s R e a s o n a b l e C a p E x – a p p r o x i m a t e l y 1 . 5 % o f s a l e s S u s t a i n a b l e , a t t r a c t i v e f r e e c a s h f l o w F r a g m e n t e d m a r k e t w i t h a d d i t i o n a l e x p a n s i o n o p p o r t u n i t i e s t h r o u g h o r g a n i c g r o w t h a n d a c q u i s i t i o n s A l l i a n t T e c h s y s t e m s R e s t r i c t e d

F Y 1 4 A c q u i s i t i o n s S a v a g e & B u s h n e l l A T K S a v a g e : p r o m i n e n t b r a n d s k n o w n f o r a c c u r a c y , i n n o v a t i o n , q u a l i t y , a n d a f f o r d a b i l i t y O v e r 1 0 0 y e a r s o f m a r k e t l e a d i n g i n n o v a t i o n i n t h e l o n g - g u n c a t e g o r y B u s h n e l l : h i g h - q u a l i t y , a f f o r d a b l e a n d i n n o v a t i v e o p t i c s a n d a c c e s s o r i e s b r a n d s C o m p l i m e n t s e x i s t i n g p o r t f o l i o ; p r o v i d e s o u t d o o r r e c r e a t i o n e x p a n s i o n o p p o r t u n i t i e s N e w S p o r t i n g i s l e a d e r i n S p o r t i n g a m m u n i t i o n a n d a c c e s s o r i e s f o r h u n t e r s , s h o o t i n g e n t h u s i a s t s a n d l a w e n f o r c e m e n t p r o f e s s i o n a l s N e w S p o r t i n g o f f e r s l e a d i n g c o n s u m e r b r a n d s , a f f o r d a b l e i n n o v a t i o n , s c a l a b i l i t y a n d u n p a r a l l e l e d d i s t r i b u t i o n i n ag r o w i n g m a r k e t H u n t i n g S h o o t i n g O u t d o o r R e c r e a t i o n A m m u n i t i o n S p o r t i n g A r m s A c c e s s o r i e s S a v a g e & B u s h n e l l a r e h i g h l y s t r a t e g i c a c q u i s i t i o n s s t r e n g t h e n i n g N e w S p o r t i n g ’ s o f f e r i n g A l l i a n t T e c h s y s t e m s R e s t r i c t e d

D e l i v e r i n g V a l u e A T K T a x - f r e e s p i n - o f f – a c o m p e l l i n g o p p o r t u n i t y t o d e l i v e r s i g n i f i c a n t v a l u e f o r s h a r e h o l d e r s F o c u s e d l e a d e r i n O u t d o o r S p o r t i n g m a r k e t S t r o n g c o m p e t i t o r w i t h b r o a d p o r t f o l i o o f i n n o v a t i v e p r o d u c t s , p o w e r f u l b r a n d s , u n m a t c h e d d i s t r i b u t i o n , s c a l e a d v a n t a g e s a n d e x p e r i e n c e d l e a d e r s h i p N e w S p o r t i n g c o m p a n y w i l l b e a p p r o p r i a t e l y c a p i t a l i z e d t o s u p p o r t b u s i n e s s s t r a t e g y a n d f u t u r e g r o w t h o p p o r t u n i t i e s S o l i d b a l a n c e s h e e t , s t r o n g o r g a n i c g r o w t h , r e a s o n a b l e C a p E x , s u s t a i n a b l e f r e e c a s h f l o w , f u t u r e a c q u i s i t i o n o p p o r t u n i t i e s , a t t r a c t i v e R O I C o n t i n u e d l o n g - t e r m p a r t n e r s h i p w i t h L a k eC i t y A A P a n d N e w R i v e r E n e r g e t i c s A l l i a n t T e c h s y s t e m s R e s t r i c t e d

N o n G A A P R e c o n c i l i a t i o n s A T K E B I T D A a n d A d j u s t e d E B I T D A E B I T D A i s a m e a s u r e u s e d b y m a n a g e m e n t t o m e a s u r e o p e r a t i n g p e r f o r m a n c e , d e f i n e d a s I n c o m e b e f o r e I n t e r e s t , I n c o m e t a x e s a n d n o n - c o n t r o l l i n g i n t e r e s t p l u s d e p r e c i a t i o n a n d a m o r t i z a t i o n . A d j u s t e d E B I T D A i s d e f i n e d a s E B I T D A f u r t h e r a d j u s t e d t o g i v e e f f e c t t o c e r t a i n a d j u s t m e n t s i n c a l c u l a t i n g c o v e n a n t r a t i o s a n d c o m p l i a n c e u n d e r t h e c r e d i t f a c i l i t y . A T K b e l i e v e s t h e i n c l u s i o n o f E B I T D A a n d A d j u s t e d E B I T D A i s a p p r o p r i a t e t o p r o v i d e a d d i t i o n a l i n f o r m a t i o n t o i n v e s t o r s a b o u t c e r t a i n m a t e r i a l n o n - c a s h i t e m s a n d a c q u i r e dE B I T D A d u r i n g t h e p e r i o d ( $ M ) S p o r t i n g P r o F o r m a T r a i l i n g 1 2 M o n t h s 1 2 / 3 1 / 1 3 ( u n a u d i t e d ) E B I T 1 8 7 A d j u s t m e n t s : A c q u i s i t i o n I n v e n t o r y S t e p - u p 1 0 B u s h n e l l A c q u i r e d E B I T 4 2 S a v a g e A c q u i r e d E B I T 2 6 M & A C o s t s 1 7 A c q u i s i t i o n T r a n s i t i o n C o s t s 3 I n c r e m e n t a l P u b l i c C o m p a n y C o s t s ( 7 ) F A S P e n s i o n P u r c h a s e A c c o u n t i n g 9 T o t a l A d j u s t m e n t s 1 0 0 A d j u s t e d E B I T 2 8 7 A d d b a c k : D e p r e c i a t i o n & A m o r t i z a t i o n 3 8 A d d b a c k : B u s h n e l l D e p r e c i a t i o n & A m o r t i z a t i o n 2 7 A d d b a c k : S a v a g e D e p r e c i a t i o n & A m o r t i z a t i o n 9 A d j u s t e d E B I T D A 3 6 1 T h e f i n a n c i a l s p r o v i d e d a b o v e r e p r e s e n t o u r S p o r t i n g S e g m e n t a n di n c l u d e c o r p o r a t e a l l o c a t i o n s t h a t w e r e b a s e d u p o n g o o d f a i t h e s t i m a t e s a n d j u d g m e n t s , w h i c h a l l o c a t i o n s m a y n o t n e c e s s a r i l y b e i n d i c a t i v e o f w h a t t h e a c t u a l a m o u n t s w o u l d b e i f t h e S p o r t i n g G r o u p w e r e a n i n d e p e n d e n t p u b l i c l y t r a d e d c o m p a n y . I n a d d i t i o n , c o r p o r a t e a l l o c a t i o n s m a y r e q u i r e a d j u s t m e n t r e s u l t i n g f r o m t h e a u d i t o f t h e S p o r t i n g B u s i n e s s f o r p u r p o s e s o f t h e F o r m 1 0 f o r t h e D i s t r i b u t i o n . A l l i a n t T e c h s y s t e m s R e s t r i c t e d