Chief MSgt. Mark Barber, Command Chief Master Sergeant of the 315th Airlift Wing, Joint Base Charleston, South Carolina, briefs trainees from the Development and Training Flight on the many opportunities within the enlisted force during the Unit Training Assembly Sept. 8, 2018. The DTF is a delayed entry program at Joint Base Charleston, South Carolina 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)