worse happens? >> we just got notification here from the capitol police that there is a threat inside. >> there are scores of protesters, we're told, i'm not sure exactly how many -- >> this is an incredibly dangerous situation that's unfolding here in the united states. >> my phone's vibrating and i begin to get texts. from my daughter. "where are you?" so i'm texting back. "i'm in the house chamber, and i'm in the speaker's chair and presiding." "i know, but why are you there?" question marks. like, what are you talking about? "you should leave." and then i begin to hear what sounds like shouting outside the chamber. >> there was an ominousness that's growing in the chamber at this point. and the then, of course, it escalates when security comes in