U.S. Air Force KC-135 Stratotankers prepare to take-off during Exercise Titan Fury at Fairchild Air Force Base, Washington, Dec. 9, 2019. The KC-135 is utilized to extend the reach of fighters, bombers and other aircraft through aerial refueling, projecting U.S. and allied airpower around the world 24/7, 365 days a year. (U.S. Air Force photo by Senior Airman Lawrence Sena)