U.S. Airmen assigned to the 100th Aircraft Maintenance Squadron prepare a KC-135 Stratotanker from the 100th Air Refueling Wing, RAF Mildenhall, England, for takeoff during exercise Atlantic Trident 25 at Rovaniemi Air Base, Finland, June 17, 2025. Atlantic Trident 25 is a recurring multinational training exercise between the U.S., U.K. and France to train in an interoperable environment, refining operational integration and ensuring Allied forces can seamlessly secure the Euro-Atlantic region. Finland hosted this iteration of the training series for the first time.