and you know perfectly well it has been attempted. we know that. it is a tribute to the response that has come from this country that we've been able to ward off a further attack. but you know that enemies are out there plotting and hoping they can pull the same thing off which they've so far failed to do since 9/11 2001. >> jon: it was early in the bush 43 administration the attack took place. he was supposed to be the education president and he was at an education event when the attacks took place. it certainly shaped his administration, that of his successor, barack obama, and now you have president trump making remarks. your thoughts on all of that. >> i remember thinking at the time wondering how president bush would respond to that. and it utterly changed his presidency. it affected him and his vice president perhaps more profoundly. and those two men pursued this enemy with extraordinary and