Peggy Noonan has an outstanding article posted at Opinion Journal. She reviews 9-11 in a slightly different way that is sorrowful, yet rewarding:
Everyone remembers the pictures, but I think more and more about the sounds. I always ask people what they heard that day in New York. We've all seen the film and videotape, but the sound equipment of television crews didn't always catch what people have described as the deep metallic roar...
I think too about the sounds that came from within the buildings and within the planes--the phone calls and messages left on answering machines, all the last things said to whoever was home and picked up the phone. They awe me, those messages.
Something terrible had happened. Life was reduced to its essentials. Time was short. People said what counted, what mattered. It has been noted that there is no record of anyone calling to say, "I never liked you," or, "You hurt my feelings." No one negotiated past grievances or said, "Vote for Smith." Amazingly --or not--there is no record of anyone damning the terrorists or saying "I hate them."
No one said anything unneeded, extraneous or small. Crisis is a great editor. When you read the transcripts that have been released over the years it's all so clear...This is what I get from the last messages. People are often stronger than they know, bigger, more gallant than they'd guess. And this: We're all lucky to be here today and able to say what deserves saying, and if you say it a lot, it won't make it common and so unheard, but known and absorbed.
I think the sound of the last messages, of what was said, will live as long in human history, and contain within it as much of human history, as any old metallic roar.