ROCKY RAPPEL U.S. Army Ranger instructors watch as an Army Ranger student rappels down the side of a 60-foot rock face on Camp Frank D. Merrill, in Dahlonega, Ga., Feb. 20, 2011. The students learn mountaineering skills, including rappelling and knot tying, during the course. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 150678-R-WMR69-417.jpg Photo Gallery