Tech. Sgt. Christopher Thesenvitz, 175th Fighter Squadron crew chief, assists Capt. Travis Barnett, 175th FS F-16 pilot, in checking his gear prior to engine start during the South Dakota Air National Guard’s 2012 Live Drop exercise at Ellsworth Air Force Base, S.D., Sept. 19, 2012. The F-16 is highly maneuverable and has proven itself both in air-to-air combat and air-to-surface operations. (U.S Air Force photo by Airman 1st Class Alystria Maurer/Released)