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WASHINGTON, DC - JULY 02: Law enforcement officials respond to the Navy Yard facility July 2, 2015 in Washington, DC. There was reports of a active shooter. This is the site of a 2013 shooting where 12 people were killed. (Photo by Mark Wilson/Getty Images)

WASHINGTON, DC - JULY 02:  Law enforcement officials respond to the Navy Yard facility July 2, 2015 in Washington, DC. There was reports of a active shooter. This is the site of a 2013 shooting where 12 people were killed.  (Photo by Mark Wilson/Getty Images)