CNN CNN Newsroom With Carol Costello September 22, 2015 14:22:00
Police commissioner bill bratton had to say about this. >> we plan for the worst or the unexpected. we watch very closely all of his appearances around the world, how he interacts with the crowds. >> you've studied those appearances. >> oh, sure. in terms of how he interacts. that's something we need to know about him, because undoubtedly he will seek to do that. he makes it quite clear that he wants to meet with his pa rigser ins. you're concerned about active shooter, explosive device, concerned with any type of weapon, for that matter. >> reporter: so when you see crowds of that size, i mea...
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