I was lying in bed. My alarm had just gone off, and there was a news report of a plane hitting the WTC. I though, great some dumb ass in a Cessna just killed him self and 5 other people because he was lookie-looing while flying over the city. I went into the living room to turn on the TV. I was like "holy shit" that must have been bigger than a cesna. I watched the second plane hit the second tower. Then the Pentagon got hit. I had to leave to a meeting at work (almost the whole company). We got nothing done. We were watching as the towers collapsed.
I remember thinking I was glad I had a concealed permit, and that I had a stash of guns and ammo (in case of anarchy). Kinda of a random thought, but we were near a military storage facility for chemical weapons. I remember feeling like I was in combat mode for a while. (Kinda silly in retrospect, but with the attacks, and gas skyrocketing and uncertainty that is how I felt).