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white house senior staff are in touch with mayor adams and police commissioner to offer any assistance as needed. we have not heard from the president directly but i'd be surprised if we don't hear from him as he leaves the white house in a few minutes to head to iowa. of course, a consistent theme from president biden and fellow democrats has been steps by congress to curb gun violence. he announced some regulatory steps earlier in the week. we will see what he has to say about that and also whether he has any information that would shed more light on the question that you've been raising and our colleagues have been raising, was this an act of terrorism or was it something else, kate? >> all right, john. we'll stay close to you as well. john harwood standing by at the white house for us. live pictures of these two cameras from the sky and from the ground of the scene in brooklyn, now bring in right now senior law enforcement analyst charles ramsey. of course, the former philadelphia police commissioner and former dc police chief. and cnn law enforcement analyst