I was three blocks from ground zero, and the second plane flew right by my apartment window before it hit the second tower. We were evacuated, moved back in weeks later, then I moved to a different building. But I spent the next five years walking the loop around Broadway and the Hudson River, as I had done before it happened, so I saw it all pretty close up.
I will certainly never forget. And there are many personal stories I could tell about it, things I saw or heard from friends.