Tech. Sgt. William Anderson, Development and Training Flight Program Manager with the 315th Airlift Wing at Joint Base Charleston, South Carolina, provides verbal motivation to a trainee performing the sit-up portion of the physical training test during the Unit Training Assembly Sept. 8, 2018. The DTF is a delayed entry program at Joint Base Charleston, giving new members of the Air Force Reserve a chance to learn, develop, and cultivate the basic skills of being an Airman prior to attending Basic Military Training. (U.S. Air Force photo by Tech. Sgt. Bobby Pilch)