150924-N-PO203-195 PATUXENT RIVER, Maryland (Sep. 24, 2015) Dr. Frank Herr, head of the Ocean Battlespace Sensing Department at the Office of Naval Research (ONR), talks about unmanned undersea vehicle (UUV) technologies with professional staff members, Kevin Gates, (HASC), right, and Anish Goel, (SASC), at the ONR-sponsored demonstration of UUVs at NAS Patuxent River, Md. To the left, ONR program manager, Dr. Jason Stack speaks with Deb Rey, Maryland State Delegate. The two-week event, PAX River 2015, brought together 150 participants, 26 technology teams and unmanned systems to jointly explore UUV technologies in common, at-sea environments. (U.S. Navy photo by John F. Williams/Released)