U.S. Air Force Staff Sgt. Konrad Kuzmin, 439th Supply Chain Operations Squadron weapons systems, stock and control technician, takes notes at Langley Air Force Base, Va., Jan. 13, 2015. Members of the 439th SCOS came to the 633rd Logistics Readiness Squadron to receive training on the flight service center, where various parts are received that are broken and need to be fixed off base. (U.S. Air Force photo by Airman 1st Class Breonna Veal/Released)