Capt. Russell Lee, 421st Fighter Squadron pilot, taxis his F-35A Lightning II fighter aircraft, assigned to the 421st FS from Hill Air Force Base, Utah, on the flightline at Spangdahlem Air Base, Germany, June 11, 2019. Multiple F-35s came to the European theater to train with partner nations as part of a Theater Security Package. Training with NATO aircraft enhances relationships and improves overall coordination with allies. (U.S. Air Force photo by Airman 1st Class Valerie Seelye)