been up by the starbucks and restaurant. every time i go to boston i have dinner at that restaurant. very intimate with this area. >> is your gut feeling that these two suspects are still around or that they would have disappeared at fast as possible? >> i won't even speculate on that because it would be useless speculation at this stage of the game. >> we do know they planned it, though. we know they operated as a team and that they planned this. so is it likely from your experience that people that go to that length of planning and preparing and executing, would they normally have some kind of escape route, do you think? >> it depends. it depends who they are, where they're from. are they local. and we have these two suspects, that doesn't mean that's it, they're the only two. there might have been others. what the fbi has to work with now is that's an area that has a lot of cameras, so having identified these two as principal suspects, the ability now using big data capabilities to go back and look at every