Staff Sgt. Brian Kay, 926th Aircraft Maintenance Squadron crew chief, performs a service inspection on an F-16 Fighting Falcon assigned to the 64th Aggressor’s Squadron during Red Flag 16-3, July 13, 2016 at Nellis Air Force Base, Nev. the 64th AGRS will test other unit’s capabilities in air-to-air combat while acting as the “enemy” in the exercise.