180418-A-LI523-756 Fort Bliss, Texas-based soldiers with the 1st Armored Division’s 2-501st General Support Aviation Battalion conduct preflight checks on their HH-60M Black Hawk helicopter during Guardian Response 18 at Camp Atterbury, Ind., April 18, 2018. More than 4,500 soldiers from across the country are participating in Guardian Response 18, a multi-component training exercise designed to validate Army units’ ability to support civil authorities in the event of a chemical, biological, radiological or nuclear catastrophe. Army Reserve photo by Staff Sgt. Christopher J. Sofia SHARE IMAGE: Download Image: Full Size (2.07 MB) Tags: U.S. Army Forces Command, FORSCOM, Muscatatuck Urban Training Center, MUTC, America’s Army Reserve, CSTP, Guardian Response, U.S. Army Reserve, U.S. Army, USAR, CBRN, Chemical, Biological, 84th Training Command, 78th Training Division, Guardian Response18, Radiological, Army Total Force, Indiana, Nuclear, Combat Support Training Program, Vinrant Response Photo By: Staff Sgt. Christopher Sofia VIRIN: 180418-A-LI523-756.JPG Photo Gallery