Equipment used to test hazardous materials fill a Fort Eustis Emergency Services truck at Joint Base Langley-Eustis, Va., July 20, 2017. Fort Eustis firefighters are trained in emergency management services and use equipment such as BioThreat Alert Reader and HazMatID Elite, to handle hazardous situations that may arise. (U.S. Air Force photo/Airman 1st Class Kaylee Dubois)