We had a contractor come here (Ohio) that next Summer - insisted on driving from NYC. After he got here, he explained that he had been working at ground zero, and after watching and listening to bodies hit the ground (literally, close enough to hear bodies hit), he said he’d never get in an airplane again.

Not sure if that’s still true, but the sheer ugliness of that day will never, should never be forgotten. It also should never be anything but a solemn remembrance of those lost; it’s not national workers’ day, not hug a tree day, not get out the vote. Remember.