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...
Fuel lines connect the USS William P. Lawrence guided missile destroyer, right, with a tanker during a refueling at sea Wednesday, Jan. 20, 2016, in waters off 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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