CAMP FOSTER, OKINAWA, Japan – A chemical, biological,

CAMP FOSTER, OKINAWA, Japan – A chemical, biological, radiological, and nuclear defense specialist prepares capsules of 2-chlorobenzalmalononitrile, or CS gas, Jan. 11 in the gas chamber on Marine Corps Air Station Futenma, Okinawa, Japan. The gas chamber is annual or biannual training run by CBRN that all Marines complete. CBRN Marines ensure the Marine Corps is able to operate in contaminated environments enabling more successful force projection. (U.S. Marine Corps photo by Pfc. Kelcey Seymour)