A U.S. Air Force crew chief assigned to Kunsan Air Base, South Korea, reviews a maintenance manual from the seat of an F-16 Fighting Falcon during RED FLAG-Alaska 14-3 Aug. 19, 2014, Eielson Air Force Base, Alaska. Aircrews worked day and night to ensure aircraft were operational throughout the two week exercise in which pilots flew two sorties per day. (U.S. Air Force photo by Senior Airman Peter Reft/Released)