U.S. Marine Corps Staff Sgt. Jordan Torcello, 13th Marine Expeditionary Unit, Explosive Ordnance Disposal team leader, explains a more efficient way to detonate the charges to U.S. Marines, during advanced joint explosive demolition training at Arta Range Complex, Djibouti, Dec. 30, 2013. The U.S. Marine Corps and Navy teamed up to increase their demolition skills, by detonating improvised charges built from scraps of material.(U.S. Air Force photo by Senior Airman Tabatha Zarrella/Released)