U.S. Marine Corps 1st Sgt. Michael P. Edwards pulls the lanyard on a 120-mm mortar system.
U.S. Marine Corps 1st Sgt. Michael P. Edwards pulls the lanyard on a 120-mm mortar system causing it to fire during a training exercise at Camp Pendleton, Calif., on June 21, 2011. Edwards is assigned to Kilo Battery, 3rd Battalion, 12th Marine Regiment.