No known threat around Capitol Hill: Law enforcement

11:58 AM ET Mon, 16 Sept 2013

CNBC's Eamon Javers reports President Obama and the Mayor of Washington, DC are expected to discuss the shooting incident at the Washington Navy Yard as soon as the facts become available. And Robert Liscouski, shares insight on how law enforcement tries to prevent attacks. Also, John Harwood discusses the likelihood of the President delivering today's scheduled speech on the economy. Former Gov. Jim Gilmore (R-VA) adds his perspective on how local security respond to these type of incidents.