Photos

Lance Cpl. Eric D. Gore, chemical, biological, radiological and nuclear defense training NCO with Headquarters Battalion, Marine Forces Reserve, opens a window to vent simulated anhydrous ammonia gas after discovering a casualty during a CBRN training event at Camp Shelby, Miss., Nov. 17, 2015. As part of a CBRN reconnaissance team, Marines must document the hazardous environment and search for the location of any casualties. (U.S. Marine Corps photo by Cpl. Ian Leones/Released)