I was in college at the time and I had just got out of the shower getting ready for classes and was browsing StrangeTalk (is that board even alive anymore?) and saw all kinds of threads on the WTC so I turned the TV on. I didn't go to class at all that day and just watched everything on TV. Those on my floor who did go to class said not many showed up and 1 professor even told them all to leave and go watch the coverage on TV because there is no reason people should be going to class today with the tradgedy that happened. It was even enough to move the Iowa vs Iowa State game that weekend to the end of the season, definitely a moment in history that impacted a lot of people.