Marines lift a mock casualty using a field-expedient stretcher during an endurance course April 17 at the Jungle Warfare Training Center on Camp Gonsalves. By this point in the course, the Marines carried the casualty close to a mile over steep hills and harsh jungle terrain, according to Maj. Tim Kao. The Marines are with various units assigned to Combat Assault Battalion, 3rd Marine Division, III Marine Expeditionary Force. Kao is the camp commander for Camp Gonsalves, Marine Corps Base Camp Smedley D. Butler, Marine Corps Installations Pacific. (U.S. Marine Corps photo by Cpl. Stephen D. Himes/Released) - Marines lift a mock casualty using a field-expedient stretcher during an endurance course April 17 at the Jungle Warfare Training Center on Camp Gonsalves. By this point in the course, the Marines carried the casualty close to a mile over steep hills and harsh jungle terrain, according to Maj. Tim Kao. The Marines are with various units assigned to Combat Assault Battalion, 3rd Marine Division, III Marine Expeditionary Force. Kao is the camp commander for Camp Gonsalves, Marine Corps Base Camp Smedley D. Butler, Marine Corps Installations Pacific. (U.S. Marine Corps photo by Cpl. Stephen D. Himes/Released)