Tech. Sgt. Matthew Dillon, a crew chief with the 911th Aircraft Maintenance Squadron, opens a C-17 Globemaster III underside hatch for the Allegheny County Airport Authority Fire Rescue team at the Pittsburgh International Airport Air Reserve Station, Pennsylvania, May 9, 2019. Dillon showed the firefighters all of the places that may be flash points for fires as well as where valves and systems need to be turned off to prevent further damage to the aircraft during a fire. (U.S. Air Force Photo by Senior Airman Grace Thomson)