A trainee with the 315th Airlift Wing Development and Training Flight receives instructions from a DTF volunteer instructor during the 315th Airlift Wing’s Development and Training Flight unit training assembly weekend Aug. 4, 2012 at Joint Base Charleston, S.C. DTF participation is mandatory for all newly enlisted Airmen and serves as part of their enlistment into the inactive Reserve while awaiting positions to open in Basic Military Training. (U.S. Air Force Photo/Staff Sgt. Shane Ellis)