threat of radical islamic terrorism that attacked our nation and brought these towers down striking at the very heart of the american spirit. earlier this morning we interviewed the new york city police commissioner james o'neill who says the city is safer because of the precautions taken because of this day. how it happened is a reminder to us every day. >> it brings you right back to september 11th, 2001. how it changed the world, changed the city and the nation but it changed the world. today is important for a number of reasons. it's important for everybody to remember. it is also a reminder for us that we have to continue to be vigilant. >> and the attacks that we've seen around the world and the 22 terrorist attempts and plots that have been broken up in new york city since 2001, it is a reminder not only of what we lost on this day 16 years ago, but also of the threat that