i know there is a lot of unknowns now. but the way that the lead negotiators on this now are communicating with the hostage-taker. do we know, for example, if he is being responsive? do we know any of that? reporter: yeah, all the details of all of that still very much unknown. we do know there is down into indication taking place. but the details of how those communications are going at this point is unknown. but, clearly, a very distressing situation as we spoke to that one member of the congre gation who was listening to the live stream how chaotic it all sounded. you couldn t see anybody, apparently, on the live stream according to this member. sow could just hear the suspect screaming his ter scli ically a