Rear Admiral Robert J. Gilbeau, left, enters a federal courthouse in San Diego where he pleaded guilty to lying to federal investigators in the "Fat Leonard" navy bribery trial. Lenny Ignelzi/AP hide caption

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Capt. Daniel Dusek, 49, shown in an undated photo provided by the Navy, is the highest-ranking officer to face charges so far in a Navy corruption scandal. Dusek served as the deputy director of operations for the 7th Fleet and commanded two ships, the Essex and the Bonhomme Richard. Navy hide caption

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Humpback whales and tanker in Stellwagen Bank National Marine Sanctuary in Massachusetts Bay. Green Fire Productions/Flickr hide caption

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Listening To Whale Migration Reveals A Sea Of Noise Pollution, Too

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Helicopter belonging to the Netherlands participates in NATO's Dynamic Mongoose anti-submarine exercise in the North Sea, off the coast of Norway, on May 4, 2015. MARIT HOMMEDAL/AFP/Getty Images hide caption

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