Authorities not ruling out 2nd suspect in DC Navy Yard shooting
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Authorities not ruling out 2nd suspect in DC Navy Yard shooting

Witnesses say the shooter in the DC Navy Yard shooting said nothing as he fired the shots killing 13 people and injuring dozens. Robert McFadden, The Soufan Group and former NCIS deputy assistant director, provides insight.
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Mon, Sep 16 20137:25 PM EDT