U.S. Air Force weapons load Airmen from the 148th Fighter Wing, Duluth, Minn., perform final inspections before take-off on a F-16 Fighting Falcon at Eielson Air Force Base, Alaska, Aug. 11, 2015, during RED FLAG-Alaska 15-3. RF-A is a Pacific Air Forces commander-directed field training exercise 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 Master Sgt. Ralph Kapustka/Released)