A pair of U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 13th Fighter Squadron, Misawa Air Base, Japan, taxi the runway May 5, 2015, prior to a RED FLAG-Alaska (RF-A) 15-2 mission at Eielson Air Force Base, Alaska. RF-A exercises are vital to maintaining peace and stability in the Asia-Pacific region. (U.S. Air Force photo by Tech. Sgt. Miguel Lara III/Released)