Cayle Harris, 620th Ground Combat Training Squadron counter improvised explosive device instructor, discusses Minot Air Force Base, N.D., 791st Missile Security Forces Squadron Airmen’s performance after a counter IED course at Camp Guernsey, Wyo., July 19, 2017. Harris is a retired U.S. Air Force master sergeant and served more than 20 years in the explosive ordinance disposal career field. (U.S. Air Force photo by Staff Sgt. Christopher Ruano)