Airman Basic Jeffrey M. Guerriero, an emergency management specialist with the 911th Airlift Wing, uses a bio-check powder kit to test a powdery substance during biological response training, Coraopolis, Pennsylvania, Feb. 7, 2016. 911th Airlift Wing Reservists teamed up with their neighboring Air National Guard unit, the 171st Air Refueling Wing, to execute biological response training (U.S. Air Force photo by Staff Sgt. Jonathan Hehnly)