U.S. Air Force Staff Sgt. Dray Jackson, right, 7th Logistics Readiness Squadron vehicle operator, walks through a checklist with Airmen during training at Dyess Air Force Base, Texas, Dec. 14, 2016. Trainers ensure hands-on training, flightline training and computer based training are completed for all Airmen in their unit. (U.S. Air Force photo by Airman 1st Class April Lancto)