160504-NAC887-004 FREMONT, Calif. (May 4, 2016) Secretary of the Navy (SECNAV) Ray Mabus delivers remarks during the world energy innovation forum in Fremont, California. Mabus spoke about how the Department of Navy has decreased its dependence on fossil fuels, saving money and lives. (U.S. Navy photo by Chief Mass Communication. Specialist Sam Shavers/Released)