U.S. Air Force F-16 Fighting Falcons assigned to the 64th Aggressor Squadron wait to take off during Red Flag 15-4 at Nellis Air Force Base, Nev., Aug. 24, 2015. Red Flag involves a series of intense air-to-air combat exercises designed to prepare U.S. and allied forces for future real world conflicts. (U.S. Air Force photo by Senior Airman Thomas Spangler)
<br>Unit: 99th Air Base Wing Public Affairs
Senior Airman Thomas Spangler
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