I was sleeping because I was working a late shift. When I got up I turned the tv on, (still half asleep) and all I saw was smoke/dust. I couldn't grasp what was going on! I thought it was a bombing in Iraq, Iran or Lebanon. It took several minutes to figure out what happened. I was teaching a new class that night and several people were impacted by the event. The very next day we had a bomb threat called in to my building (Corporate Headquarters for a satellite tv company). It was awful. The one thing I remember was the quiet after they stopped all flights. We live about 30 miles from the Denver airport. Every once in awhile we would hear an F-16 fly over. We survived Columbine just a few years previously. I think I had better stop thinking about this now...