Keywords: US Navy 110830-N-ZZ999-004 Secretary of the Navy (SECNAV) Ray Mabus delivers the keynote address at the National Clean Energy Summit 4.0 in Las Veg.jpg en LAS VEGAS Aug 30 2011 Secretary of the Navy SECNAV Ray Mabus delivers the keynote address at the National Clean Energy Summit 4 0 in Las Vegas The summit brought together leaders of industry government and research and development to chart the course for the future of energy in America U S Navy photo by Chief Mass Communication Specialist Sam Shavers/Released 2011-08-30 110830-N-ZZ999-004 Navy http //www navy mil/view_image asp id 106595 U S Navy photo by Chief Mass Communication Specialist Sam Shavers PD-USGov-Military-Navy Images from US Navy location LAS VEGAS |