U.S. Air Force Maj. Michael Gommel (left), 120th Fighter Squadron, shakes hands with Tech. Sgt. Jacob Adams, 140th Maintenance Squadron, Buckley Air Force Base, Colorado Air National Guard, before starting pre-flight checks on an F-16 Fighting Falcon during Red Flag 14-1, at Nellis Air Force Base, Nev., Jan. 31, 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/Released)