back to you. >> joe johns, what detail there. one brother in the chaos of the other actually drove over or hit the other brother. the amazing detail. brothers identified themselves to the carjacked car driver, identified themselves as the marathon bombers, extraordinary. >> one big bit of news here, a development, we know that public transportation in boston suspended. people in and around boston being told by the governor and law enforcement to stay in their homes. schools are closed. universities closed. people told not to open businesses and now we've been told that taxi cab service in boston, taxi cab service has been suspended as well. as if there was any doubt that the city is on lockdown. now cabs are also off-limits. >> boston is closed for business this morning, as this investigation continues. i want to go to barbara starr,