U.S. Air Force 1st Lieutenant Drew Lyons, 492nd Fighter Squadron, F-15E Strike Eagle pilot, and 1st Lieutenant J. Paul Reasner, 492nd FS, F-15E Strike Eagle weapon systems officer, make final observations of their aircraft prior to a sortie in support of exercise Red Flag 16-4 at Nellis Air Force Base, Nevada Aug 17. Red Flag is the U.S. Air Force’s premier air-to-air combat training exercise and one of a series of advanced training programs that is administered by the U.S. Air Force Warfare Center and executed through the 414th Combat Training Squadron. (U.S. Air Force photo/ Tech. Sgt. Matthew Plew)