NORFOLK (Oct. 22, 2010) Sailors assigned to Riverine Group 1 stand their post aboard Riverine Command Boat (Experimental) (RCB-X) as the boat conducts test runs at Naval Station Norfolk. The RCB-X is powered by an alternative fuel blend of 50 percent algae-based and 50 percent NATO F-76 fuels to support the Secretary of the Navy's efforts to reduce total energy consumption on naval ships. (U.S. Navy photo by Mass Communication Specialist 2nd Class Clifford L. H. Davis/Released)
