Some people compare it to the moment they learned JFK was assassinated–so many little details of the day are burned into your memory years later. I remember exactly what I was doing as the second plane hit, when the towers fell. The emotions are still vivid enough to bring tears to my eyes when I think about the chaos of the day mixed in with wonderful stories of sacrifice, and of people banding together and taking care of one another.
Eleven years later, and I still remember.