A Marine from Combat Logistics Battalion 3 calls for a corpsman to help treat a casualty during a battalion field exercise, Jan. 27, 2015, after her unit’s simulated forward operating base was attacked at Marine Corps Training Area Bellows. The battalion tested their emergency response in several areas, including a mass casualty drill. (U.S. Marine Corps photo by Lance Cpl. Khalil Ross/released) - A Marine from Combat Logistics Battalion 3 calls for a corpsman to help treat a casualty during a battalion field exercise, Jan. 27, 2015, after her unit’s simulated forward operating base was attacked at Marine Corps Training Area Bellows. The battalion tested their emergency response in several areas, including a mass casualty drill. (U.S. Marine Corps photo by Lance Cpl. Khalil Ross/released)