An Attempt to Explain What Would Happen to the Tail of a 757 If Indeed a 757 Hit the Pentagon

Some reasonable but not entirely convincing theories.

The main question is where did this huge section of the plane go? It is not clear at all from the known record and I find it hard to believe that the tail smashed into tiny bits.

So either--
a) the tail flew somewhere out of camera range and later was moved (as the site I link to explains), or
b) a 757 didn't hit the Pentagon

I still tend to believe a Boeing 757/flight77 did not hit the Pentagon, for a variety of reasons. However, I think it is still possible.