The Navy's unmanned X-47B receives fuel from an Omega K-707 tanker.

PATUXENT RIVER, Md. (April 22, 2015) The Navy's unmanned X-47B receives fuel from an Omega K-707 tanker while operating in the Atlantic Test Ranges over the Chesapeake Bay. This test marked the first time an unmanned aircraft refueled in flight. (U.S. Navy photo/Released) 150422-N-CE233-457

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