U.S. Air Force Col. Sean C. Routier, F-35 Academic Training Center director, recognizes British Royal Air Force Sgt. Matthew Elwood, RAF Marham Aircrew Equipment Assemblies Maintenance Bay senior noncommissioned officer, as the 1000th international maintenance student Feb. 1, 2018, at Eglin Air Force Base, Fla. Since the ATC opened in 2011, it has graduated more than 5,500 maintainers and 361 pilots across three branches of service and ten participating countries. (U.S. Air Force photo by Airman 1st Class Emily Smallwood)