A Belgian F-16 Fighting Falcon receives fuel from a U.S. Air Force KC-135 Stratotanker during Exercise Trident Juncture 18, in Swedish airspace, Oct. 30, 2018. The exercise is the largest NATO exercise since 2002, and includes more than 50,000 military members from 31 countries. The exercise provides U.S. forces with unique opportunities to train with NATO allies and partners. (U.S. Air Force photo by Senior Airman Luke Milano)(U.S. Air Force photo by Senior Airman Luke Milano)