I had been working at Walter Reed Army Hospital for a little over a month, on their PC/LAN help desk. We were about a week into cleaning up the trouble caused by a spike on the local power grid, which had caused loss of electricity across the whole post. The hospital had been put on emergency generators immediately, but the rest of the post was without power most of the month of August.
When we heard about the first plane, most of us also thought it was just a small plane, and even one of the soldiers assigned to our department made a "Top Gun" reference: "Sorry Ghost Rider, the pattern is full" or something like that. When the second plane hit, one of the techs not born in the US immediately began saying how we had this coming, and just as the discussion started getting heated, we heard about the Pentagon getting hit and all the soldiers in our department disappeared. They got deployed to the gates while the post got locked down.
Once DC started shutting down, the decision was made to release all unnecesary personnel. While my position wasn't very critical, the IT department still needed a skeleton crew, so I volunteered to stay until things calmed down. I figured traffic was going to be a nightmare anyway, and even though I was on a military base, I felt safer there than on the road. I called my wife to let her know, but since she was watching my cousin's kid as well as our own 2 and 3 year olds, she had kids shows on and didn't know what was going on.
The only 'odd' thing (well, besides the whole 'terrorist attack') to me was when they broke coverage to go to Afghanistan, where the Northern Alliance had just launched an attack on the Taliban. It had kind of a 'wag the dog' feel to me at the time, but I dismissed it as

thinking, since everything was so raw. Still, I have to wonder about the timing of it.