WHITEMAN AIR FORCE BASE, Mo. - A KC-135 Stratotanker from the 509th Weapons Squadron, USAF Weapons School at Fairchild Air Force Base, Wa., refuels a B-2 Spirit during the SMOKEX Exercise over Kansas Nov.16. The KC-135 transfers fuel at about 16 gallons per second. (U.S. Air Force photo by Staff Sgt. Alexandra M. Boutte)