Airman 1st Class Stefon Douglas, 28th Aircraft Maintenance Squadron aerospace propulsion technician, examines the propulsion system of a B-1 bomber during an inspection at Ellsworth Air Force Base, S.D., March 28, 2013. Aerospace propulsion technicians contribute to the success of B-1 missions to provide critical long-range strike capability and close air support as necessary. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)