Staff Sgt. Luke Mefford, 11th Civil Engineer Squadron Explosive Ordnance Disposal training and quality control technician, inspects the area around an uncovered training device June 4, 2015, on Joint Base Andrews, Md. Many improvised explosive devices can be set or linked together, so EOD technicians search for additional devices after finding one. (U.S. Air Force photo by Senior Airman Preston Webb/Released)