There are many aspects of the events of that day that I have trouble believing the official storyline.
1. 4 sets of marginally proficient VFR pilots managed to commandeer and pilot large commercial airliners at speeds exceeding their design specs for the altitude they were flying, making fairly steep turns in order to hit their targets, and in the case of the Pentagon, a descending 270 degree turn with extremely high precision given the very little damage done to other things in the trajectory.
2. Tower 1 and 2 fell at near freefall speeds. These buildings had a core framework of steel pillars, almost 50 of them each I believe. It's clear from the video that the planes did not hit the buildings in the center so I find it very hard to believe that the core steel was compromised in such a fashion that the entire core structure failed allowing the buildings to collapse down upon themselves and wind up in their own footprint. Jet fuel doesn't burn hot enough even inside a jet engine where conditions are ripe for heat - to melt steel. The smoke from the building was black, implying an oxygen starved fire which tends to burn cooler.
3. WTC 7 wasn't hit with any airplane and yet it collapsed entirely into its own footprint around 5pm or so the same day. The official story was fires inside weakened the structure. To date no steel-framed building has collapsed like these buildings did due to fire.. before or since.
4. Early reports of the PA plane that crashed in Shanksville were that debris was found a few miles away from the crash site. Why? If the plane was shot down (and nobody would fault the air force for doing that given what the other 3 planes had already done) why not just own up to it? Having a story about the passengers taking over and becoming heroes is nice I suppose but how realistic is it? And regardless of how many souls lost their lives on the plane, why wasn't the area excavated to find all the pieces? This was a crime scene after all.
5. I've listened to some of the recordings from Boston center when they called NORAD and told them "we have a plane that is not responding and has changed course/altitude/stopped squawking" NORAD asked them if this was a drill or real ATC said this is real. I find it VERY hard to believe that the US couldn't have scrambled intercept planes from OTIS (near Cape Cod MA) or McGuire (New Jersey) and been able to intercept these aircraft. I've also heard there were numerous "war games" going on that day which "confused" the military. For pete's sake, this country has the best military in the world, and yet 4 planes (slow in comparison to the interceptors) managed to fly around for over an hour and nobody got near one?
6. There's testimony from Norm Mineta (former DOT guy) who was in the same room as buckshot dick cheney who was being asked "do the orders still stand" and cheney replied that "if you haven't heard anything to the contrary the orders still stand" a few times this conversation happened in front of Mr Mineta. The story goes that the underling was asking if the orders not to shoot down the approaching airliner (to the pentagon which has surface to air batteries on the roof) were still standing.
I just think there's an awful lot about that hateful day that we don't know and probably will never know. I find too many holes in the official story and until those get answered satisfactorily then I guess I'm always going to be a bit distrustful of those who tell it.
RC