A U.S. Army Green Beret, center foreground, instructs members of the Colombian Compañía Jungla Antinarcóticos during “Glass House Drills” meant to simulate clearing the interior of a building part of a joint training exercise on Eglin Air Force Base, Fla., Nov. 20, 2015. The Green Beret is assigned to the 7th Special Forces Group. U.S. Army photo by Maj. Thomas Cieslak