ARCTIC OCEAN - Chief Petty Officer Jeff Wenciker, a Marine Science Technician assigned to the Coast Guard Cutter Polar Sea, homeported in Seattle, gives hand signals to the crane operator lowering the conductivity, temperature and depth machine over the side of the cutter. University of Southern Illinois research scientists are conducting the study using this machine and are traveling aboard the Polar Sea. (U.S. Coast Guard photo/ Petty Officer 3rd Class Pamela Manns)
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