U.S. Airmen simulate cleaning chemical, biological, radiological, nuclear and high-yield explosive (CBRNE) threats off a firefighter after he entered a CBRNE training area at Fort Eustis, Va., Jan. 28, 2016. After exposure to CBRNE materials, personnel must clean their protective gear to prevent the risk of exposure spreading beyond the affected area. (U.S. Air Force photo by Staff Sgt. Natasha Stannard)