Keywords: US Navy 111209-N-AB302-041 Landing Craft Air Cushion (LCAC) 91 is underway during a Navy alternative fuel demonstration.jpg en PANAMA CITY Fla Dec 9 2011 Landing Craft Air Cushion LCAC 91 is underway during a Navy alternative fuel demonstration The craft ran on a 50/50 mix of alternative fuel and F-76 diesel and is the Navy's fastest craft to date that has run on alternative fuel U S Navy photo by Jonathan Gibson/Released 2011-12-09 111209-N-AB302-041 Navy http //www navy mil/view_image asp id 111843 U S Navy photo by Jonathan Gibson PD-USGov-Military-Navy Images from US Navy location PANAMA CITY Fla |