150711-N-PO203-029 VIRGINIA BEACH, Virginia (July 11, 2015) Judges evaluate the University of Florida's autonomous surface vehicle, PropaGator, as it navigates an aquatic obstacle course July 11 during the annual AUVSI Foundation and Office of Naval Research-sponsored International RoboBoat competition in Virginia Beach, Virginia. (U.S. Navy photo by John F. Williams/Released)