U.S. Air Force Senior Airman Ty McNew (left) and Chief Master Sgt. Edward Hauschild (right),140th Maintenance Squadron, Colorado Air National Guard, conduct preflight-checks on an F-16 Fighting Falcon fighter jet from the 120th Fighter Squadron at Buckley Air Force Base, Colo., before a night training mission at Red Flag 14-1, at Nellis Air Force Base, Nev., Feb. 04, 2014. Combat units come together from the United States and its allied countries to engage in realistic combat training scenarios within Nellis’ 2.9 million acre Test and Training Range Complex. (U.S. Air National Guard photo/Tech. Sgt. Wolfram M. Stumpf)