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. SHARE: Download: Full Size (0.09 MB) Credit: VIRIN: 733600-X-GVV52-645.jpg Photo Gallery