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Mohammad Youssuf Abdulazeez is the suspected gunman in July 16, 2015 Chattanooga, Tennessee Naval Reserve shooting that left four Marines dead and the gunmen also killed.
Mohammad Youssuf Abdulazeez is the suspected gunman in July 16, 2015 Chattanooga, Tennessee Naval Reserve shooting that left four Marines dead and the gunmen also killed.

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    Investigators combing through Tenn. shooter's writings

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Investigators combing through Tenn. shooter's writings

CNN correspondent Sunlen Serfaty reports.

Investigators combing through Tenn. shooter's writings

CNN correspondent Sunlen Serfaty reports.