A U.S. Air Force F-16 Fighting Falcon assigned to the 52nd Fighter Wing, Spangdahlem Air Base, Germany, flies away after receiving fuel from a 100th Air Refueling Wing KC-135 Stratotanker during the Allied Combat Lethality Exercise over Poland, Dec. 10, 2019. United States Air Forces in Europe – Air Forces Africa and NATO allies and partners continue to strengthen deterrence efforts and adapt through improving readiness and responsiveness. (U.S. Air Force photo by Senior Airman Benjamin Cooper)