Staff Sgt. Patrick McCoy (left) and Sgt. Aaron Brady with the 41st Civil Support Team search for a suspected biological threat during a hazardous materials exercise at the Waverly Hills Sanatorium in Louisville, Ky., Feb. 7, 2016. The team utilized the historic site as an suitable location for a mission with low visibility and limited communications in an unfamiliar environment. (U.S. Army National Guard photo by Staff Sgt. Scott Raymond)