A U.S. Air Force B-1B Lancer, assigned to the 28th Bomb Wing, Ellsworth Air Force Base, S.D., and a KC-135 Stratotanker, assigned to the 914th Air Refueling Wing, Niagara Falls Air Reserve Station, N.Y., conduct aerial refueling over the continental United States on Dec. 10, 2018. The Lancer serves as the premier platform for America’s long-range bomber force, carrying the largest conventional payload of guided and unguided weapons in the Air Force inventory. (U.S. Air Force photo by Staff Sgt. Joshua Williams)