I was working for the county doing computer support. Our office was across the hall from the Emergency Operations Center. The EOC director came over and told us a plane had hit the WTC and did we want to see. We walk over and right as we walk into his office I see the second plane hit. But I can't comprehend what I'm seeing, since at that point is was an accident. Spent the next several hours between his office, my office, and the EOC. Phones ringing off the hook, Directors, Supervisors coming down, even increased security. We were in such a remote location and everyone knew everyone that was supposed to work there that we weren't bothering to wear ID badges. It was primary day that day, and I remember wishing the mayor good luck, he told me they'd probably stop the voting that day. Saw several live reports done that day with the County Exec, the Mayor, and others done. The rest of the week was spent in a daze.
That was @Guffalo. If you follow the link @LeviF posted early in the thread, you'll find it there. He may post it again.
I lived by the Syracuse airport. The only planes I heard for days was the Air National Guard taking off.