>>10236139If Dreamer did manage to kill Heyman, it could had potentially stopped 9/11 from happening.
WM took place on April 1st 2001, 5 months prior to 9/11. If there was a live murder on such a large show, in that kind of arena, then that would be the news for the following months. This would had lead to further restrictions and tighter security for any large groups of people, including airports.
