RF-A 15-1
U.S. Marines assigned to Marine Attack Squadron 311 from Marine Corps Air Station Yuma, Ariz., perform a foreign object debris check on the flight line at Eielson Air Force Base, Alaska, Oct. 6, 2014, during RED FLAG-Alaska 15-1. RF-A is a series of Pacific Air Forces commander-directed field training exercises for U.S. and partner nation forces, providing combined offensive counter-air, interdiction, close air support and large force employment training in a simulated combat environment. (U.S. Air Force photo by Tech. Sgt. Joseph Swafford Jr./Released)