Tech. Sgt. Daniel David
U.S. Air Force Tech. Sgt. Daniel David, 51st Civil Engineer Squadron Explosive Ordnance Disposal operations and training section chief, attaches stoppers to his harness during a Mountain Mobility Course at Bhukansan National Park, City of Seoul, Republic of Korea, Aug. 30, 2017. The course allowed members to learn procedures and techniques that go into mountain climbing.
(U.S. Air Force photo by Staff Sgt. Franklin R. Ramos/Released)