U.S. Marine Lt. Col. Brian P. Coyne, center left, celebrates the successful completion of sports day with Republic of Korea Lt. Col. Yoo Hogeun, right center, during Korean Marine Exchange Program 15-12 at Chung Ryong, Republic of Korea, Sept. 12, 2015. The Marines participated in a number of events, including a weighted pack run, soccer, basketball and tug of war. KMEP 15-12 is a continuous bilateral training exercise that enhances the ROK and U.S. alliance, promotes stability on the Korean Peninsula and strengthens ROK and U.S. military capabilities and interoperability. Coyne, from Long Island, New York, is the commanding officer of 2nd Battalion, 3rd Marine Division, currently attached to 4th Marine Regiment, III Marine Expeditionary Force through the Unit Deployment Program. Hogeun, from Kangwondo, ROK, is the commanding officer of 11th Battalion, 1st Regiment, 2nd Marine Division. - U.S. Marine Lt. Col. Brian P. Coyne, center left, celebrates the successful completion of sports day with Republic of Korea Lt. Col. Yoo Hogeun, right center, during Korean Marine Exchange Program 15-12 at Chung Ryong, Republic of Korea, Sept. 12, 2015. The Marines participated in a number of events, including a weighted pack run, soccer, basketball and tug of war. KMEP 15-12 is a continuous bilateral training exercise that enhances the ROK and U.S. alliance, promotes stability on the Korean Peninsula and strengthens ROK and U.S. military capabilities and interoperability. Coyne, from Long Island, New York, is the commanding officer of 2nd Battalion, 3rd Marine Division, currently attached to 4th Marine Regiment, III Marine Expeditionary Force through the Unit Deployment Program. Hogeun, from Kangwondo, ROK, is the commanding officer of 11th Battalion, 1st Regiment, 2nd Marine Division.