An A-10 Thunderbolt II from the 163rd Fighter Squadron, Indiana Air National Guard, Ft. Wayne, Ind., approaches a KC-135 Stratotanker from Kadena Air Base, Japan, for refueling during during RED FLAG-Alaska 13-3, Aug. 21, 2013, Eielson Air Force Base, Alaska. RF-A enables joint and international units to sharpen their combat skills by flying simulated combat sorties in a realistic threat environment. (U.S. Air Force photo/Senior Airman Shawn Nickel)