U.S. Soldiers with the 51st Chemical Biological Radiological Nuclear Company, prepare to treat victims at a decontamination field site during Guardian Response 17 at the Muscatatuck Urban Training Center, Ind., April 27, 2017.
Guardian Response, as part of Vibrant Response, is a multi-component training exercise run by the U.S. Army Reserve designed to validate nearly 4,000 service members in Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological and Nuclear (CBRN) catastrophe. (U.S. Army Reserve photo by Master Sgt. Michel Sauret). Original public domain image from Flickr