Staff Sgt. Jason Holmes, 51st Civil Engineer Squadron construction inspector, prepares a roof inspection drone for launch outside of Osan Air Base’s Turumi Lodge, Nov. 2, 2020. As the first Air Force unit to utilize drones to perform roof inspections, the 51st CES has made it possible for Airmen to perform their duties safely from the ground without risking rooftop falling hazards. (U.S. Air Force photo by 1st Lt. Daniel de La Fé)