Republic of Korea and U.S. Marines train for tactical patrols during Korean Marine Exchange Program 15-4 Feb. 5 at the Pyeongchang Winter Training Facility, Pyeongchang, Republic of Korea. Cohesiveness, interoperability and comprehension all play a vital role should the ROK and U.S. Marines need to work together during any future operation, according to U.S. Marine Staff Sgt. Donald J. Leek, platoon sergeant with Company L, 3rd Battalion, 3rd Marine Regiment, currently assigned to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force under the unit deployment program. KMEP is a regularly scheduled, bilateral, small-unit training exercise, which enhances the combat readiness and interoperability of ROK and U.S. Marine Corps’ forces. The ROK Marines are with 1st Reconnaissance Battalion, 1st ROK Marine Division. The U.S. Marines are with Company L, 3rd Bn., 3rd Marines, currently assigned to 4th Marines, 3rd Marine Division, III MEF under the unit deployment program. (U.S. Marine Corps photo by Pfc. Cedric R. Haller II/Released)