Three US contractors

killed

An Afghan soldier linked to the Taliban killed three U.S. contractors and wounded a fourth on Thursday at Kabul's military airport. An increase in so-called

insider attacks in Afghanistan eroded trust between government forces and their international allies in the final years of the combat mission that ended in 2014, prompting foreign forces to scale

back interaction with Afghans. The Taliban claimed responsibility for the attack saying a militant

infiltrator had carried it out. The Afghan air force official said it was not clear why the attacker had

killed the advisers. The international force in Afghanistan confirmed the shooting took place on

Thursday evening. It also confirmed that one Afghan had been killed but it did not specify that

he was the attacker.

In Other NewsIn Other News Former Republican Presidential nominee Mitt Romney has made a decision on

whether to go forward with a third presidential bid and will tell to supporters which way he is going in a Friday morning call.

Former rap mogul Marion "Suge" Knight has been arrested on suspicion of murder in connection with a Thursday hit-and-run that killed a man in Compton, California, authorities said Friday. He is being held with bail set at $2 million.

There have been countless attempts by daredevils to ride down both parts of Niagara Falls -- the American Falls on the U.S. side and Horseshoe Falls on the Canadian side. But earlier this week, Will Gadd made history when he became the first person to climp up the falls. The Canadian ice climber used only ice hooks to scale the frozen cliffs at Terrapin Point, a 147-foot section directly next to Horseshoe Falls. "I checked out the spot we were thinking of climbing in the summer. You'd be swept away by the torrential downpour then," Gadd said on redbull.com. "On a warm winter (day), there's no climb here.“ But on a cold, freezing day in late January, the wall of water is a wall of ice -- the icing is so heavy that the area is closed to tourists during the winter months. He clambered up the frozen walls three times, taking about an hour each trip.

For about the next nine months, divers will be working to bring up the CSS Georgia an old Civil War ironclad warship, from nearly 40 feet down in the Savannah River. The removal of the CSS Georgia is necessary for the state and federal project, which will see the channel go from 42 to 47 feet so massive cargo container ships can use the port without relying on the tide. While some material from the Confederate vessel was recovered after the war, four artillery pieces, parts of the propeller and propulsion system, a boiler and two casemates, which housed the artillery pieces, remain. One of the casemates is huge: 68 feet by 24 feet.