150204-N-AT895-126 WASHINGTON (Feb. 4, 2015) Chief of Naval Operations (CNO) Adm. Jonathan Greenert fields a question from an audience member at the Naval Future Force Science and Technology EXPO. The two-day event, hosted by the Office of Naval Research, highlights the requirements, challenges and new opportunities in nine science and technology focus areas, with an emphasis on innovations for the future force. (U.S. Navy photo by Mass Communication Specialist 1st Class Nathan Laird/Released)