A U.S. Marine fast ropes from a rappel tower March 20 during the final day of the three-day Mountain Warfare Training Course at the Mountain Warfare Training Center in Pohang, Republic of Korea. Fast roping is useful for deploying troops from a helicopter in places where the helicopter itself cannot touch down. The U.S. Marines taking part in the course are with III Marine Expeditionary Force and are in the Republic of Korea to take part in Marine Expeditionary Force Exercise 2014. MEFEX 14 exercises the interoperability and combined capabilities of the ROK and U.S. Marine Corps. (U.S. Marine Corps photo by Lance Cpl. Cedric R. Haller II/RELEASED)