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Vitad Pradith, a technical expert for Teledyne Marine, shows U.S. Navy Sailors assigned to Underwater Construction Team 2 and Republic of Korea UCT how to properly operate a Teledyne Oceanscience Z-Boat 1800 during a hydrographic survey in Sattahip, Thailand for Exercise Cobra Gold Feb. 19, 2018. Cobra Gold 18 provides a venue for the United States, allied and partner nations to advance interoperability and increase partner capacity in planning and executing complex and realistic multinational force and combined task force operations.