150204-N-PO203-492 WASHINGTON, D.C. (Feb. 4, 2015) Dr. Reginald Beach, Office of Naval Research (ONR) program officer for littoral geosciences and optics, discusses ONR-sponsored research on the changing sea ice, ocean and atmosphere, with Chief of Naval Operations (CNO) Adm. Jonathan Greenert, during a tour of the exhibit hall at the Naval Future Force Science and Technology (S&T) EXPO. Joining the CNO are Rear Adm. Mat Winter, chief of naval research, left and Dr. Frank Herr, right, head, ONR Ocean Battlespace Sensing Department. (U.S. Navy photo by John F. Williams/Released)