Global Thunder
Master Sgt. Eric Whitesel, foreground, stands by as pilots prepare the 507th Air Refueling Wing KC-135R Stratotanker for engine start. Whitesel and Tech. Sgt. Jeffrey Nash, 507th Aircraft Maintenance Squadron, prepared the tanker for takeoff during the Global Thunder exercise Oct. 24 here. Flight crews remained on alert during the exercise in preparation for no notice missions. Global Thunder is an annual exercise led by U.S. Strategic Command. Its purpose is to demonstrate the capability to generate aircraft for the nuclear enterprise. (U.S. Air Force photo/Senior Airman Mark Hybers)