Army Sgt. 1st Class James Henderson explains to soldiers the necessary and optional equipment to build a surface or subsurface surveillance site during phase one of a leaders course on reconnaissance surveillance on Fort Benning, Ga., Oct. 23, 2013. During phase one, soldiers learn the fundamentals of a variety of surveillance subjects, including intelligence-capturing equipment, camoflauge, stalking, concealment of surveillance sites, airborne operations, communications and fast-roping techniques. (U.S. Army photo by Ashley Cross)