Chemical, Biological, Radiological and Nuclear defense specialists decontaminate a simulated casualty during an assessment/consequences management exercise Dec 5 at Camp Hansen. After the casualties were brought outside, the CBRN defense specialists use decontamination techniques to remove any remaining harmful agents. The Marines are with the 31st Marine Expeditionary Unit. (U.S. Marine Corps photo by Lance Cpl. Ryan C. Mains/Released)