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gt. First Class Christopher Rosenberger, a member of the Wisconsin National Guard’s 54th Civil Support Team, tests an unknown substance during a collective lanes training exercise in Madison, Wis., on March 8, 2022. The Madison-based CST is the state’s full-time response team for emergencies or terrorist events that involve weapons of mass destruction, toxic industrial chemicals or natural disasters. Wisconsin National Guard photo by Staff Sgt. Katie Theusch

Photo by: Sgt. 1st Class Katie Theusch |  VIRIN: 220308-Z-ON199-1053.JPG