Senior Airman Parker Davis, an explosive ordnance disposal technician assigned to the 28th Civil Engineer Squadron, is inspected by Master Sgt. Carlos Sanchez, the EOD section chief assigned to the 28th CES, during an EOD Team of the Year competition at Ellsworth Air Force Base, S.D., Sept. 12, 2017. The chemical scenario during the event simulated the need for a leak seal and package in a decontamination line. (U.S. Air Force photo by Airman Nicolas Z. Erwin)