FORT INDIANTOWN GAP, Pa. - Lance Cpl. Wayne Rohall (Middle) and Lance Cpl. Steven Foster, field artillerymen with India Battery, 3rd Battalion 14th Marine Regiment, 4th Marine Division, ram a round into a M777A2 Lightweight Howitzer, Oct. 25, 2014 at Fort Indiantown Gap, Pa., during exercise Twisted Sister. Exercise Twisted Sister was a live-fire artillery training exercise designed to hone tactics, techniques and procedures at the battalion level. (Marine Corps Photo by Cpl. J. Gage Karwick/Released) - FORT INDIANTOWN GAP, Pa. - Lance Cpl. Wayne Rohall (Middle) and Lance Cpl. Steven Foster, field artillerymen with India Battery, 3rd Battalion 14th Marine Regiment, 4th Marine Division, ram a round into a M777A2 Lightweight Howitzer, Oct. 25, 2014 at Fort Indiantown Gap, Pa., during exercise Twisted Sister. Exercise Twisted Sister was a live-fire artillery training exercise designed to hone tactics, techniques and procedures at the battalion level. (Marine Corps Photo by Cpl. J. Gage Karwick/Released)