Regardless of whether there were more possible terrorists and attack vectors, 9/11 was world changing event that has degraded civil society in every country of the world for decades, and studying the event and it's consequences is, and will ever be, of critical import to any people that has interest in being free from tyranny. Nothing more advanced tyranny in my lifetime, in any history I am aware of, or more needs to be understood, explained, and mitigated that our posterity be restored to sovereignty and freedom in civil society they themselves own and control.
Thanks!
RE: Another plane investigated as possibly involved in 9/11