Two crewman aboard the Coast Guard Cutter SPAR take turns hammering a red-hot rivet-pin while working aids to navigation in Kodiak, Alaska, Sunday, Dec. 02, 2012. When the chain of a buoy is inspected and found that it has been worn too thin, the crew is required to crop out that section of chain and replace it with new chain. U.S. Coast Guard photo by Petty Officer 3rd Class Jonathan Klingenberg.
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