Republic of Korea Marines instruct U.S. Marines on

Republic of Korea Marines instruct U.S. Marines on how to properly execute a fast rope descent and simulated helicopter rappel 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 are with various units under 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)