While we are compiling a list of questions, can I throw one in.

When the damage assesment was done on the Pentagon, it was found that the partial collapse of the floors above the impact site was caused by the fact that supporting columns were sheared away rather than obliterated.

This is important because the internal bracing system used on the support columns was unusual by any sense.

Now the pattern of shearing is comparable to the wing span of the aircraft claimed to have hit the building. And not a cruise missile.