A U.S. Air Force Airman observes a hot pit refueling procedure on an F-22A Raptor training aircraft during training class at Joint Base Langley-Eustis, Va., Sept. 13, 2016. The class, led by trainers from the 1st Maintenance Group training section, teaches maintainers the proper procedures to work with logistics Airmen to refuel aircrafts while the engines are still running, allowing for quicker turnaround for jets to return to flight. (U.S. Air Force photo by Staff Sgt. Teresa J. Cleveland)