First responders and survivors have been diagnosed with cancer. This changed everything from how we fight isis to how we negotiate with iran to airport security. Debra feyerick is in manhattan near ground zero. Reporter we are just south of ground zero where this powerful ceremony is taking place. You think about 14 years, carol. Just behind you see the tower, one World Trade Center that has risen from the ashes over the last 14 years. It will never replace the two buildings that fell. It will never replace anything lost on that day. But what it does show, what it does represent is that there is something there to remind people and to bring people together. Now, i did speak to the Police Commissioner of the nypd. He said were sort of at a cross road right now. A number of people dont remember 9 11 and they need to. We cannot grow complacent. Listen to what he had to say. If you were six years old at the time it has no relevance to you. This needs to serve as a constant reminder that th