Firefighting Competition U.S. Airmen fill buckets with water to put out a simulated fire during a firefighting competition at Royal Air Force Base Mildenhall, England, Oct. 12, 2018. Air Force Staff Sgt. Christine Groening SHARE: Download: Full Size (1.39 MB) Tags: Air Force Credit: Air Force Staff Sgt. Christine Groening VIRIN: 181012-F-WZ808-0044C.JPG Photo Gallery