Airmen of the 28th Aircraft Maintenance Squadron are congratulated by evaluators after completing their portion of the Global Strike Challenge at Ellsworth Air Force Base, S.D., Oct. 1, 2012. Four load crew members and two crew chiefs prepared many weeks for this one day of competition during which career field specialists evaluated their operational success, skills and mission readiness. (U.S. Air Force photo by Airman 1st Class Kate Thornton-Maurer/Released)