the stuff of a superpower. did you pick up reaction along the way from the pentagon? i know you interviewed at least one historian. >> yeah, you know, brian, first of all, the president truly was dazzled by that parade in france, and talked about it to his aides in private on the flight home on air force one and in the weeks that followed and, indeed, two months after that parade when he sat down with president macron of france at the united nations general assembly. said he was so struck by that parade, america's going to have to one-up france and do its own parade. but to your broader point about the dynamic here, i picked up some concern in the pentagon, frankly, that the military officials there would like to not see this parade happen. this is not usual activity. there have been some instances, rather, in history, including john f. kennedy's inaugural parade in 1961, where military equipment was used. but for the most part throughout the cold war, america did not