A U.S. Navy T38 unmanned surface vessel, left, approaches a towable capture and connection device, center, towed by USNS Vindicator (TSV-5), right, during an Aug. 11 refueling demonstration off Joint Expeditionary Base Little Creek-Fort Story, Virginia. Naval Air Warfare Center Weapons Division’s Blue Water Instrumentation program led the demonstration, part of an effort to keep unmanned vessels on station longer during long-range weapons testing. (Photo: U.S. Navy)