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A kayak catamaran unmanned surface vehicle follows an unmanned underwater vehicle in Triadelphia Reservoir in Brookeville, Md., Sept. 28, 2017, during a joint integrated autonomous demonstration with engineers from the Naval Oceanographic Office at the John C. Stennis Space Center in Mississippi controlling the test with supervision and assistance from colleagues on station from Naval Surface Warfare Center, Carderock Division™s Autonomous Vehicle and Instrumentation Group. (U.S. Navy photo by Ryan Hanyok/Released)
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