U.S. Air Force F-22 Raptors taxi to the end of the runway at Langley Air Force Base, Va., May 19, 2016. The 94th Fighter Squadron launched 12 Raptors to participate in Red Flag-Alaska, an exercise designed to replicate the stresses that warfighters must face during their combat sorties. (U.S. Air Force photo by Senior Airman Kayla Newman)