U.S. Air Force Tech. Sgt. Wyatt Mathews, firefighter in the 419th Civil Engineer Squadron, extinguishes a fire onboard a “downed aircraft” during a readiness training exercise at Hill Air Force Base, Utah on Sept. 12, 2021. The biannual burn exercise provides firefighters firsthand experience in aircraft and structural live-fire burns to ensure they are trained, equipped, and ready to deploy. (U.S. Air Force photo by Senior Airman Erica Webster)