Washington police chief: Still waiting to clear second suspect
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At an early evening press conference to discuss the latest developments in the investigation of the Washington D.C. Naval Yard shooting, police chief Cathy Lanier said officials are still waiting to clear the second possible suspect. NBC News' Charles Hadlock, Cliff Van Zandt and former FBI special agent Don Clark join MSNBC's Rev. Al Sharpton to discuss the press conference.Sept. 16, 2013