Senior Airman Hector Guemarezcolon, 341st Civil Engineer Squadron firefighter, prepares to accomplish morning checkout on rescue-truck equipment April 22, 2015, at Malmstrom Air Force Base, Mont. Crews at the Malmstrom Fire Department operate on 24-hour shifts and must be in full gear and out the door within 60 seconds from the moment an alarm sounds. (U.S. Air Force photo/Chris Willis)