In my expierience seeing missiles first hand. A missle doesn't leave wreckage. And if it were a missile that hit the pentagon, and was disengaged before impact, at 350MPH, minimal thrust, there would still be nothing left of it. Check out blackguards video of an F4 Crashing into a wall. I believe "Atomized" was the word used. The rotor does look like a rotor from a 757, take to mind that a rotor isn't the size of the whole fucking engine.
With regards to anti-semitism, I see the same phenomenon as is seen with UFOs. Every culture sees UFOs, but not surprisingly they do not see identical UFOs and aliens. Different cultures at different points in history see different things, consistent within their cultures yet distinct from other cultures. Similarly, the conspiracy minded take a look at 9/11, and dream up theories which satisfy their fears and prejudices. That's why in Europe, the anti-semetic element of 9/11 theories are so much more prominent, and in the middle east they virtually dominate the 9/11 conspiracy genre. In the US, it is the CIA, big business and the corporate media boogeymen which the conspiracy theorists see lurking behind every shadow.