Oh god, this shit kills me.
First, the common citizen knows about as much of aircraft as he does quantum physics. Everything with 1 engine is a Piper Cub and anything with 4 engines is a 747. So therefore 2 engines must be a commuter.
Second, my best friend flew 757s for American for 3 years (he is now flying Airbuses). He is NOT known for exaggeration and his descriptions of the 757s flying characteristics are glowing and verbose with "agile, sleek and easy to handle"
Third, Following this video....WHAT HAPPENED TO THE PLANE THEN?
Fourth, ANYONE familiar with aviation crashes knows that most accidents happen at a very shallow angle of impact, therefore leaving wreckage on the surface. Most aviation accidents happen at LOW SPEED because the pilots are trying to SURVIVE, NOT DIE. No one ever tried to land at 530 MPH.
Fifth, did any of those "witnesses" that said it "sounded like a missle" HAVE ANY FIRST HAND KNOWLEDGE OF WHAT A REAL MISSILE SOUNDS LIKE?? Especially something that would cause THAT much damage. Missiles are not loud, what everyone heard WAS.
Sixth, The Pentagon was designed to withstand brutal damage.
Seventh:
Real photos from the pentagon