NAVAL AIR STATION PATUXENT RIVER (April 22, 2010) On Earth Day, Naval Aviationâs front-line strike fighter reached supersonic speeds on a biofuel blend â the most visible demonstration to date of the Navyâs commitment to energy independence and security. The Green Hornet Biofuel flight test program represents a significant milestone in the certification of renewable, alternative fuel sources for use in Navy and Marine Corps tactical systems. (U.S. Navy video/Released)