A Marine with 1st Battalion, 3rd Marine Regiment, currently assigned to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force as part of the Unit Deployment Program, provides suppressive fire with an M240B medium machine gun during a combined arms live-fire exercise April 29 at Suseong-ri Firing Range. The exercise was conducted as one of the final training events of exercise Ssang Yong 13. Ssang Yong, which means "twin dragons," is an annual exercise designed to strengthen the bond and increase the capabilities of both ROK and U.S. forces. The CALFEX consisted of live fire by tanks, light armored vehicles, amphibious assault vehicles and infantrymen using small-arms weapons. (U.S. Marine Corps photo by Lance Cpl. Donald T. Peterson/Released)