U.S. Army National Guard Soldiers assigned to the 50th Chemical Company conduct hazmat search and rescue training while participating in Guardian Response at Muscatatuck Urban Training Center, Ind., May 9, 2026. Guardian Response is an annual exercise conducted by the 87th Training Division and its partners to validate the readiness and interoperability of Army, National Guard, Army Reserve, and civilian agencies supporting domestic disaster response and the nation’s Chemical, Biological, Radiological, and Nuclear Response Enterprise. (U.S. Army photo by Pfc. Melissa Walkenhorst)