U.S. Marines with Battery K, 3rd Battalion, 11th Marine Regiment, 1st Marine Division fire an M795 High Explosive Round from an M777 lightweight 155mm Howitzer during the 11th Marine Regiment's Desert Fire Exercise aboard Marine Corps Air-Ground Combat Center Twenty Nine Palms, Calif. April 27, 2013. 11th Marines conducted an artillery desert firing exercise to maintain their combat proficiency via realistic combat scenarios. (U.S. Marine Corps photo by Cpl. John Clary 1st Marine Division, Combat Camera / Released)