brooke, this is just -- it depends on what kind of candidate you are, how important this moment is for you. are you the kind of person who wants to be on that stage and see where the facebook questions are going to be, who wants to look at the lights that are going to cut you off at the end or are you a candidate like donald trump. he didn't come here to do his own walk-through, he sent his stachlt he's the kind of guy that likes to roll in kind of at the last minute and just sort of take that flow with him to the debate stage and not spend a lot of extra time hanging around. we know donald trump has other plans today. he's meeting with the mega gop donor, sheldon adelson so he's doing his own debate prep while the other candidates do their walk-throughs, brooke. >> all right. the theme of the debate tonight is national security. that will be front and center. and so we'll watch for that and talk to some folks who are getting seated, what they're looking for ahead of tonight. but specifically as we mentioned at the top of the hour, what's happening in los angeles and in new york, i have firearms and homeland security expert and