A Fire Department of the City of New York (FDNY) firefighter in the Hazardous Material Company watches as U.S. Army Reserve Pfc. Colin Tidings, 424th Engineer Company, administers a DuoDote injection to a mannequin as if he was exposed to a nerve agent at the New York City Fire Department (FDNY) Fire Academy on Randalls Island in New York City, New York, July 9, 2018. FDNY with U.S. Army Northern Command (NORTHCOM) conducts training as a joint exercise simulating Chemical, Biological, Radiological, and Nuclear (CBRN) events to maximize the appropriate response from first response. (U.S. Army Reserve photo by Sgt. 1st Class Clinton Wood)