U.S. and Republic of Korea Marines hike a 35- km path up a mountain Jan. 15 during Korean Marine Exchange Program 15-3 in Pyeongchang, Republic of Korea. The ROK and U.S. Marines hiked side-by-side from start to finish. The U.S. Marines are reconnaissance men with Alpha Company, 3rd Reconnaissance Battalion, 3rd Marine Division, III Marine Expeditionary Force. The ROK Marines are force reconnaissance men with 2nd Battalion, 2nd Marine Division. (U.S. Marine Corps photo by Cpl. Tyler S. Giguere/Released)