50th anniversary of USS Thresher disaster

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50th anniversary of USS Thresher disaster

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50th anniversary of USS Thresher disaster

by CBSTV Videos 0:40 mins

50th anniversary of USS Thresher disaster

by CBSTV Videos 0:40 mins

The Portsmouth Naval Shipyard marked the 50th anniversary of the deadliest submarine disaster in history. The nuclear-powered USS Thresher lost power and sank on April 10, 1963, killing all 129 on board.

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