Joint and coalition forces conduct sling operations during Global Medic at Young Tactical Landing Site, Fort McCoy, Wis., June 16, 2015. Combined Joint Atlantic Serpent enhances the interoperability between international forces by exercising field medical practices while sharing equipment, protocols and battle drills in a tactical training environment. Melding CJAS with Global Medic, a joint medical training exercise, results in the largest Department of Defense field medical training exercise. (U.S. Army photo by Sgt. 1st Class Lawree Roscoe Washington Jr/RELEASED)