Before reading this, please read my post "The Important, Well-Documented Evidence that EVERYBODY Needs to Know About 9/11",
My working hypothesis for the 9/11 attacks is very similar to what is outlined by Michael Ruppert in his book "Crossing the Rubicon"
The model is that:
1) the 9/11 hijackings, as described in the 9/11 Independent Commission report, were a covert operation run by the CIA, using Al Qaeda operatives (likely as patsies).
2) the key to 9/11 is that these hijackings were merged with ongoing military hijacking exercises, specifically Operation Vigilant Guardian and Operation Vigilant Warrior, that were being run on 9/11.
3) these military exercises were "testing" the scenario of commercial planes being hijacked by terrorists and crashed into major US buildings. (The US military has been documented by major news organizations to have run such drills prior to 9/11.)
4) on 9/11/01, NORAD was running LIVE-FLY hijacking exercises: Operation Vigilant Guardian and Operation Vigilant Warrior. Vigilant Guardian was likely the defense portion of the exercise, and Vigilant Warrior was likely the part of the exercise mimicking hijacked planes. In this exercise, commercial airplanes were used to simulate hijacked aircraft. This had been done before in previous exercises (as documented by USA Today and CNN)!
5) the four 9/11 hijacked flights (AA11, AA77, UA 93, and UA175) were part of these hijacking exercises. I think it is very likely the pilots and the crew and even some of the passengers of these planes were in on the hijacking drill. This explains why the hijackers were able to penetrate the cockpits so easily (with box-cutters!) and take over the plane without the pilots alerting air traffic control.
6) I think it is highly likely either that a) the hijacked planes were taken over by remote control by the CIA/military on a pre-set course to crash into the WTC, OR b) flights 11, 175 and 77 did not crash into the WTC and Pentagon, but were piloted out over the ocean and shot down by a NORAD pilot thinking he was shooting down mock-hijacked drone planes. On 9/11/01, distress calls were heard from three planes over the Atlantic. Drone planes were then remotely piloted into the WTC and the Pentagon. Since the US government is concealing the contents of the black boxes found at Ground Zero and the Pentagon, we can't really say for sure what planes hit there. Other reasons to think drones hit the WTC and Pentagon:
i) careful analysis of the first WTC plane hit shows that the plane does not look like a Boeing 767-- it does not appear to have wing-mounted engines.
ii) careful analysis of the second WTC plane hit shows that the plane does not look like a Boeing 767-200 (see here.
iii) The blatant anomalies of the Pentagon hit have been well-documented by many different 9/11 sites.
7) The key aspect of the military hijacking exercises is that they delayed and confused the normal FAA and NORAD response to hijackings. It is very clear both of these agencies were confused and disorganized in response to the 9/11 hijackings. As part of the hijacking exercises, extra "blips" were inserted into NORAD radars simulating hijacked planes. This is probably why some people thought there were as many as eleven (such as FAA administrator Jane Garvey) or even twenty-two (Rudy Giuliani) hijacked planes on 9/11.
8) Dick Cheney appears to have been the person in charge of the 9/11 military exercises, and he had motive and opportunity to see that things went wrong (see "Crossing the Rubicon" for more on this angle.)
9) Thus, the 9/11 attacks were the result of a merge between ongoing NORAD hijacking exercises and a covert hijacking operation set-up by the CIA under the guise of Al Qaeda. In one sense, 9/11 was a military exercise gone wrong. All the known facts indicate beyond any reasonable doubt that 9/11 was purposefully sabotaged by elements of the government. Real hijackers were put onto planes and inserted into the exercise to confuse the response. As part of the exercise, commercial planes were fitted with remote control technology and were programmed to strike key buildings such as the WTC and Pentagon. These planes may have been flown empty (in which case the real flights were shot down over the ocean/remote area) or were loaded with pilots, crew, passengers and hijackers. In either case, NORAD was supposed to shoot these drone planes down before they hit their targets. Unfortunately, and tragically, the exercise became confused by too many planes on the radar, and NORAD couldn't respond normally.
10) Flight 93 was likely a real hijacked plane, and evidence suggests it was shot down. I am still analyzing flight 93 to understand how it fit in with the other hijackings, but I think that flight 93 may have been set-up differently from the other three 9/11 flights.
11) In this scenario I have outlined, very few people had knowledge of the whole operation. However, lots of people probably knew something would happen on 9/11. NORAD is probably very suspicious of what happened on 9/11, but probably can't prove anything. NORAD was probably not involved in remote control piloting of the planes-- this may have been done by the Pentagon. There is speculation that the people controlling the remote control drones were either in the part of the Pentagon that was hit or in WTC7 which collapsed late in the day of 9/11. WTC building 7 housed a CIA office.
12) I strongly suspect that the WTC towers were brought down by pre-planted explosives. How this was done or why is not exactly clear, but the pattern of collapse of the WTC towers simply does not make sense with respect to the official explanation. Certainly the collapse of the towers on 9/11 made the terror of that day much much worse than if they hadn't come down.
This overall hypothesis
1) the confused and conflicted explanations provided by the administration. Condi Rice was lying blatantly when she said no-one could imagine hijackers using airplanes as missiles and crashing them into buildings. It was a giant lie concocted as part of a massive cover-up.
2) the fact that the administration clearly didn't want 9/11 investigated.
3) the fact that the FBI and CIA knew so much about the hijackers and had nice photos of them to release after the attacks. The CIA and FBI were simply lying when they said they had no idea of the 9/11 plot.
4) the obvious planting of evidence by the FBI/CIA: Korans, wills and Arabic flight manuals in the hijackers' cars and luggage, hijacker's passport found on the street near the WTC.
5) the many other anomalies of 9/11 not described here.
1) Exactly what kind of planes hit the WTC towers and the Pentagon? Were they really flights 11, 175 and 77? What was on the black boxes that were recovered?
2) Were the hijacked planes definitely remote-controlled? If so, who controlled/programmed the flights?
3) Were all the hijackers named by the FBI actually on the flights? Where did these names come from and what were the real identities of the hijakcers who used fake names?
4) Were all of the cell phone calls and airphone calls made from the hijacked planes legitimate or could some of them have been clever fakes?
5) Who planted the explosives that brought down the WTC buildings (WTC 1, 2 and 7)?
6) While Bush and Cheney must have known about the NORAD hijacking exercise, did either of them know the full-extent of the plot?
The US government and in particular the Bush administration, clearly benefited hugely from 9/11. It is also clear that the Bush administration wanted to go to war with Iraq, and 9/11 brought an almost perfect pretext. I believe the CIA actually wanted to go into Afghanistan in order to control the opium market, and the Bush administration wanted to go into Iraq. This is part of the conflict between the Bush administration and the CIA. The anthrax attacks were another synthetic terror attack, like 9/11, and provided a stronger incentive for going to war with Iraq-- think WMD.
I believe that 9/11 is the greatest crime our country has ever witnessed, that elements of the US government were intimately involved in the attacks, that there is a massive cover-up going on, and that we simply CANNOT let them get away with it.