A U.S. Army Reserve Soldier from the 307th Chemical Company, gives instructions to a team member on moving a mock casualty 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)