SEATTLE - The crew of the Coast Guard Cutter Henry Blake, home ported in Everett, Wash., work the deck on a mission to maintain aids to navigation in the Puget Sound area on Aug. 22, 2011. The history of the Coast Guard's aids to navigation mission reaches back to the beginning of the nation when lanterns were posted high enough on shore to guide ships along the coast. U.S. Coast Guard photo by Petty Officer 2nd Class Eric J. Chandler.
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