Tech. Sgt. Jeremy Hord, 8th Air Force aircraft maintenance manager (left), evaluates Staff Sgt. Daniel Rettedal, 28th Aircraft Maintenance Squadron B-1 dedicated crew chief, during a preflight inspection of a B-1 during Global Strike Challenge at Ellsworth Air Force Base, S.D., Oct. 1, 2012. The goal of Global Strike Challenge is to showcase the world’s premier bomber and intercontinental ballistic missile forces, foster esprit de corps through competition and teamwork, recognize outstanding personnel, and improve the Air Force’s combat capabilities. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)