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Sudden ‘barrage of gunfire’ in Watertown

05:44

NBC’s Kerry Sanders reports live from the scene in Watertown, Mass., where the suspect may still be located. A ‘barrage’ of gunfire sounded, then a steady stream of officers headed down the street.  Authorities spent all day combing through 20 streets in Watertown, and had just recently lifted the order for people to leave their homes.