U.S. Army Spc. Colby Trammell, with the 284th Engineering Company, 961st Engineering Battalion, 420th Engineering Brigade, attaches a M149(Water Buffalo) to a UH-60L Black Hawk in Colon, Panama, April 21, 2013. U.S. Soldiers from Arizona Army National Guard's 285th Assault Helicopter Battalion conduct sling-load training for military service members supporting Beyond The Horizon mission. Beyond the Horizon is a U.S. Southern Command-sponsored, U.S. Army South-led, humanitarian and civic assistance exercise occurring in Panama until late June 2013. (U.S. Army Photo by 1st Lt. Joseph McDaniel/Released)