An Air Force F-16 Fighting Falcon aircraft sits on the tarmac following maintenance before the next sortie mission during Red Flag 16-1 at Eielson Air Force Base, Alaska, May 4, 2016. The airmen are maintainers assigned to the 18th Aggressor Squadron charged with keeping the aircraft ready for more than 500 flying hours during Red Flag 16-1. Air Force photo by Staff Sgt. Shawn Nickel