President Barack Obama and First Lady Michelle Obama sit with friends and relatives of Washington Navy Yard shooting victims at a Sept. 22, 2013, memorial service at the Marine Barracks in Washington.
President Barack Obama and First Lady Michelle Obama sit with friends and relatives of Washington Navy Yard shooting victims at a Sept. 22, 2013, memorial service at the Marine Barracks in Washington. Joint Chiefs of Staff
President Barack Obama and First Lady Michelle Obama sit with friends and relatives of Washington Navy Yard shooting victims at a Sept. 22, 2013, memorial service at the Marine Barracks in Washington. Joint Chiefs of Staff

National Security

March 18, 2014 3:02 PM

Pentagon: Navy Yard killings should have been prevented

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