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U.S. Navy sonar technicians aboard the guided-missile destroyer USS The Sullivans (DDG 68) monitor sonar equipment for marine mammals or submarine activity during the Southeastern Anti-Submarine Warfare Integrated Training Initiative in the Atlantic Ocean Dec. 8, 2009.

(DoD photo by Mass Communication Specialist 2nd Class Sunday Williams, U.S. Navy/Released). Original public domain image from Flickr

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U.S. Navy sonar technicians aboard the guided-missile destroyer USS The Sullivans (DDG 68) monitor sonar equipment for marine mammals or submarine activity during the Southeastern Anti-Submarine Warfare Integrated Training Initiative in the Atlantic Ocean Dec. 8, 2009.

More