CHEYENNE MOUNTAIN AIR FORCE STATION, Colo. – A recruit

CHEYENNE MOUNTAIN AIR FORCE STATION, Colo. – A recruit from the Colorado Springs Fire Department training division seals the mask on his personal protective gear before entering the flashover trainer at Cheyenne Mountain Air Force Station, Colo., fire training area, June, 9, 2017. The Colorado Springs Fire Department and the Cheyenne Mountain AFS often conduct joint training and operations as part of their mutual support agreement that covers the Cheyenne Mountain region of the Front Range. (U.S. Air Force photo by Steve Kotecki)