Here's a less flashy (no pun intended), but far more informative site that goes into much more detail. I'm really only putting these up because I, like most Americans, was totally unaware that there was even a question as to what it was that hit the pentagon building. I assumed it was a 757, because that's what the news told me.
Still don't know what to think myself, but I do now have questions. And they appear to be justifiable ones.