ROYAL AIR FORCE MILDENHALL, England -- U.S. Air Force Staff Sgt. Austin Newkirk, 100th Civil Engineer Squadron liquid fuels technician, poses for a picture on RAF Mildenhall, England, Jan. 26, 2026. Newkirk earned a challenge coin for his expertise in repairing systems that allow for rapid refueling of the KC-135 Stratotankers assigned to the 100th ARW. (U.S. Air Force photo by Airman 1st Class Chloe Masey)