An F-16 Fighting Falcon pilot prepares for takeoff during Red Flag 16-1 at Nellis Air Force Base, Nev., Jan. 25, 2016. 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/Airman 1st Class Kevin Tanenbaum)