The only thing (not very) noteworthy about my personal 9/11 experience is that, at the time, I worked at a place very close to DFW International airport. There was air traffic overhead at all times, very noisy. But eventually you just got used to hearing it, and it became part of the background scenery.

But when all the fuckery happened and the FAA called a ground stop, the lack of aircraft noise suddenly became very noticeable and somehow made the whole situation seem more immediate and dangerous to us just a mile or so away from the airport. The quiet was just creepy as hell.