Cpl. Paul Krehbiel (right), the chemical, biological, radioactive and nuclear chief with 3rd Radio Battalion, helps a Marine clear CS gas from his gas mask during annual gas chamber training at Boondocker Training Area, March 25, 2014. (U.S. Marine Corps photo by Lance Cpl. Matthew Bragg) - Cpl. Paul Krehbiel (right), the chemical, biological, radioactive and nuclear chief with 3rd Radio Battalion, helps a Marine clear CS gas from his gas mask during annual gas chamber training at Boondocker Training Area, March 25, 2014. (U.S. Marine Corps photo by Lance Cpl. Matthew Bragg)
Staff Sgt. Randall Walker, an explosive ordnance disposal technician with Marine Corps Base Hawaii Explosive Ordnance Disposal and 27-year-old native of Murray, Ky., scans an object to determine what’s inside, Dec. 13, 2013.(U.S. Marine Corps photo by Cpl. Nathan Knapke) - Staff Sgt. Randall Walker, an explosive ordnance disposal technician with Marine Corps Base Hawaii Explosive Ordnance Disposal and 27-year-old native of Murray, Ky., scans an object to determine what’s inside, Dec. 13, 2013.(U.S. Marine Corps photo by Cpl. Nathan Knapke)