direction. so even with today's tragedy, there's great reason for optimism, great reason to believe that our republic, which has its roots in boston and philadelphia, is going to prevail and succeed. so it's been an interesting and terrible night, but i do believe as we proceed as a country, this will not be the norm, the norm will be how we respond. michael, your last words about how the investigation goes down? >> slowly, methodically, and find the people who did it. >> and? >> and americans have to understand that the threat of terrorism domestically and internationally is with us. doesn't have to change the way we live. we're going to experience some hits like this, but, again, next year, we're going to have the marathon. we've got to grieve with the families who lost people today, and find the people responsible. >> what we saw today with 9/11, not quite as dramatic, fire