U.S. Army Reserve Soldiers from the 307th Chemical Company, based in Bell, California, transport a mock casualty from a building during Guardian Response 22 at Muscatatuck Urban Training Center, Indiana, May 2, 2022. The exercise validates U.S. Army Reserve units' ability to support the Defense Support of Civil Authorities (DSCA) in the event of a Chemical, Biological, Radiological and Nuclear (CBRN) catastrophe. (U.S. Army photo by Spc. Jacob Lockhart)