Secretary of the Navy Ray Mabus and Agriculture Secretary Tom Vilsack took part in the opening ceremony Wednesday for the Great Green Fleet, a year-long initiative...
The guided-missile destroyer USS Stockdale leaves Naval Base Coronado Wednesday, Jan. 20, 2016, in Coronado, California. The U.S. Navy is launching a carrier strike group to be powered partly by biofuel, calling it a milestone toward easing the military’s reliance on foreign oil.
(AP Photo/Gregory Bull)
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