I Think This Guy is Right

at PentagonResearch. Look at the picture and read his analysis below. The plane must have been significantly compromised (i.e. blown apart) before it impacted the Pentagon. The question then is-- if the plane broke up before it went in (which explains the hole size) where did the debris go?

Was the plane possibly some cheap balsa wood mock-up of a 757 that simply burned up?

Seriously, though, it makes you wonder if this plane wasn't some sort of cheap mock-up of an American Airlines Boeing 757-- the kind that might be used in a hijacking drill.