People are not sure it was a plane that hit the pentagon...

[AngPur]

Originally Posted by Sergeant_Tibbs

"The PSI doesn't determine pentration..."

Yeah it does thats why bullets penetrate stuff because its a large force behind a tiny surface area.

A bullet could penetrate your body even if it had no point, simply due to the speed and momentum alone, it would smash it's way through.

Originally Posted by Sergeant_Tibbs

They were no more than I'd say 100 - 150 feet away.

You determine this how? All I see in the image is spools that are on crash with fire in the background. There could be a multitde of angles and distances on them.

Originally Posted by Sergeant_Tibbs

Yeah just like when a car hits a tree, the front crumples up and the rest stays completly intact. Because metal doesn't transfer enregy at all.

That analogy is pointless, cars are designed with crumple zones. Likewise, by proportion the iron chassis in cars are far stronger than the thin aluminum and whatnot construction of a 757. Combine that with an explosion and pressurized cabin, and you have no airplane fuselage afterwards.