A B-52 slowing pulls up to the boom of a KC-10 Extender aerial refueling tanker from the 32nd Air Refueling Squadron at Joint Base McGuire-Dix-Lakehurst in NJ, while flying over international airspace between Greenland and Canada in the arctic on Sunday, July 31, 2016. This was part of Operation Arctic Roar, a U.S. Strategic Command operation designed to strengthen bomber crews' interoperability and demonstrate ability for the U.S. bomber force to provide flexible and vigilant long-range global-strike capability. On the return flight, the flight of 4 KC-10's practiced refueling between the tanker planes. (Alan Lessig/Staff)