Sad that so many of the iconic moments involve tragedy. We were in Vegas shortly after the shooting and will never forget seeing the crosses on the strip and the broken windows at MB. Probably our most memorable happened in April 99 when we were on our way to LV and had a plane change in Denver. We got off the plane and noted hundreds of people standing around any available TV. Took about 15 minutes to realize they were watching the Columbine aftermath. The plane trip from Denver to LV was about the quietest plane I've ever been on.