F-16CM Fighting Falcons assigned to the 20th Fighter Wing sit on the flightline after arriving at Red Flag 17-2 at Nellis Air Force Base, Nev., Feb. 24, 2017. Red Flag is a realistic combat exercise involving U.S. and Allied air forces conducting training operations on the 15,000 square mile Nevada Test and Training Range. (U.S. Air Force photo by Senior Airman Zade Vadnais)