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 U.S. Marines hiked side-by-side with their ROK Marine counterparts through snow and ice. 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)