Marines make an improvised litter using sticks they found and their blouses during the endurance course Nov. 25 at the Jungle Warfare Training Center on Camp Gonsalves. The endurance course is a four-mile course that includes rappelling, rope bridges, water obstacles and a simulated casualty station. The Marines are with 1st Battalion, 1st Marine Regiment, currently assigned to 4th Marine Regiment, 3rd Marine Division, III Marine Expeditionary Force, under the unit deployment program. (U.S. Marine Corps Photo by Cpl. Thor J. Larson/Released)