In this photo released by the U.S. Navy, sailors assigned to Riverine Group 1 conduct maneuvers aboard Riverine Command Boat (Experimental) (RCB-X) at Naval Station Norfolk, Va. on Oct. 22, 2010 The ... more 
In this photo released by the U.S. Navy, sailors assigned to Riverine Group 1 conduct maneuvers aboard Riverine Command Boat (Experimental) (RCB-X) at Naval Station Norfolk, Va. on Oct. 22, 2010 The RCB-X is powered by an alternative fuel blend of 50 percent algae-based and 50 percent NATO F-76 fuels to reduce total energy consumption on naval ships. less 
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Associated Press | Photo By U.S. Navy,Specialist 2nd Class Gregory N. Juday
Wed, Oct 27, 2010 5:44 AM EDT