Let's start simple. Take the entire operation and try to conceive of how massive a logistical undertaking it would be then conservatively multiply that by 100 and you're probably getting close. Now take the (IMO simply flat out impossible) degree of secrecy, subterfuge and mind numbing amount of complicity across an enormous amount of people and simply ask yourself not only how it makes any sense they could pull it off but why even try?
Look, even if you did manage to get the planes in the air and under government control and slam them into the towers and Pentagon why wouldn't that be enough? Death and destruction at iconic landmarks...why the hell multiply the complexity and risk of things going wrong/be discovered with the plan by oh, IDK, a factor of a million? Why not just have some guys crop dust Times Square with anthrax? Pack in a couple dirty bombs (or even a real suitcase nuke if you want to go big)? All of these (and any number of alternatives) would have been at least as (if not more) effective in instilling real fear and would be soooooooooooooooooooo much easier to control and reduce risk of exposure. But no, the answer is a plan of nigh obscene elaboration and complicit involvement.
Saturn's rings wouldn't make a large enough Occam's Razor to cover this idea.