U.S. Army Rangers complete a knots test early on day two of the Mountain Phase before the rope bridge training and vertical haul line exercises on Camp Merrill, Dahlonega, Ga., Feb. 21, 2011. U.S. Army Rangers complete a knots test early on day two of the Mountain Phase before the rope bridge training and vertical haul line exercises on Camp Merrill, Dahlonega, Ga., Feb. 21, 2011. SHARE: Download: Full Size (6.47 MB) Tags: Photo Essays Credit: VIRIN: 887801-Q-BZB87-856.jpg Photo Gallery