In this file image, a U.S. Air Force B-52H Stratofortress is refuled by a KC-135R Stratotanker over the Pacific Ocean. A pair of B-52 bombers from Barksdale Air Force Base, La., recently flew nonstop through the U.S. Central Command area of operations, practicing command and control coordination and various crew scenarios. The flight was part of a Global Power training mission. (U.S. Air Force photo by Airman 1st Class Courtney Witt)