Fire suppression system
Col. Brian Beers, 31st Maintenance Group commander, activates the fire suppressor system in Hangar 1 during a systems test, June 18, 2014, at Aviano Air Base, Italy. Fire suppression systems using high-expansion foam are designed to control fires quickly while decreasing the amount of damage to aircraft, equipment and other materials. (U.S. Air Force photo/Airman 1st Class Deana Heitzman)