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June 22, 1963 - The nuclear-powered submarines USS Tecumseh (SSBN 628), USS Daniel Boone (SSBN 629), USS Flasher (SSN 613), and USS John Calhoun (SSBN 630) are all launched in one day, emphasizing the Navy's accelerated nuclear-submarine construction program.

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JC's Naval, Marine, Air & Military News (goo.gl/3UAyLU) via David Lamberson (goo.gl/QrsYqT)

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