B-52s refuel over U.K.
A U.S. Air Force B-52 Stratofortress from Barksdale Air Force Base, La., approaches a KC-135 Stratotanker from RAF Mildenhall, England, for refueling April 2, 2015, over the United Kingdom. Bomber missions such as these ensure bomber crews maintain a high state of readiness, and demonstrate their ability to provide always-ready global-strike capability. (U.S. Air Force photo by Airman 1st Class Kyla Gifford/Released)