U.S. Army Ranger instructors watch as an Army Ranger student rappels down the side of a 60-foot rock face.
U.S. Army Ranger instructors watch as an Army Ranger student rappels down the side of a 60-foot rock face at Camp Frank D. Merrill, in Dahlonega, Ga., on Feb. 20, 2011. The students learn mountaineering skills, including rappelling and knot tying during the course.