LUKE AIR FORCE BASE, Ariz. --   Airman 1st Class Jarrod Streibich, 56th Civil Engineer Squadron firefighter, exercises on a treadmill in full turnout gear Dec. 8, 2019, at the Luke Air Force Base Fire Department, Ariz. The firefighters are on standby 24/7 while on duty and train to be physically and mentally ready for any emergency. Luke AFB firefighters assist with approximately 700 emergencies annually and help maintain the safety of Luke’s Airmen and resources. (U.S. Air Force photo by Airman 1st Class Brooke Moeder)