I sometimes forget how surreal that day was. Was in high school at the time and sort of at “that age” where the world was still pretty small and revolved around me. Mom waking me up to say “you need to watch this,” with the TV on and both towers are on fire. The morning variety newscasters breaking their household familiarity speaking in a frightening shock that was so out of character. Still went to school that day…
There are very few days in history where so much changes in a single day. There's a very clear "before and after". In my opinion, the 1990s began on Nov 9 1989 and ended on Sep 11 2001.
One of the things it changed dramatically was air travel. Remember meeting family/friends at their arrival gate as they walked off the plane? Remember getting through "security" in a few minutes because the lines moved so fast?
In the 1980s and early 1990s, my father routinely disassembled pistols and put them in his checked luggage so he could target shoot at his destinations. Imagine doing that today.