Explosive ordnance disposal technicians with 2nd EOD Company, 8th Engineer Support Battalion, prepare to conduct a chemical, biological, radiological, and nuclear training operation during their pre-deployment training aboard Camp Lejeune, N.C., May 6, 2015. During the scenario the Marines had to conduct reconnaissance on an explosive device, identify the agent in the device, and defuse it before it detonated. (U.S. Marine Corps photo by Cpl. Andy J. Orozco/Released)