The only mil pilot at the scene of the Pentagon on 9/11 was Marine Aviator Terry Morin.. .and this was his testimony...
"I estimate that the aircraft was no more than 100 feet above me (30 to 50 feet above the FOB) in a slight nose down attitude. The plane had a silver body with red and blue stripes down the fuselage. I believed at the time that it belonged to American Airlines, but I couldn’t be sure. It looked like a 737 and I so reported to authorities."
http://www.coping.org/911/survivor/pentagon.htm
Im doing research on 9/11. I looked through all the eyewitness terstimony.. etc. Terry is the only pilot. There is another pilot who says he saw a "757", but he also says he saw the nose and wings torn off. And as we all know... no wreckage was found except for engine parts.. landing gear main.. etc (which by the way.. was never matched up by s/n to their aircraft with mx logs... for any of the flights, NTSB gave powers to FBI for investigation.. FBI did nothnig.)
Here is the other pilot that saw a 757.
"TIMMERMAN: I was looking out the window; I live on the 16th floor, overlooking the Pentagon, in a corner apartment, so I have quite a panorama. And being next to National Airport, I hear jets all the time, but this jet engine was way too loud. I looked out to the southwest, and it came right down 395, right over Colombia Pike, and as is went by the Sheraton Hotel, the pilot added power to the engines. I heard it pull up a little bit more, and then I lost it behind a building.
And then it came out, and I saw it hit right in front of -- it didn't appear to crash into the building; most of the energy was dissipated in hitting the ground, but I saw the nose break up, I saw the wings fly forward, and then the conflagration engulfed everything in flames. It was horrible. "
His name is Tim Timmerman: here is his data on landings.com...
Dont know if its the same Tim...note the address...
http://www.landings.com/evird.acgi?pass=83964478&ref=-&mtd=41&cgi=%2Fcgi-bin%2Fnph-search_namd&var=9&buf=66&src=_landings%2Fpages%2Fsearch_namd.html&1=timmerman&2=timothy&5=&6=&7=&9=&8=&10=&13=&14=&16=&17=&max_ret=10&start_ret=1
So anyway... the compressor rotor found at the site looks more consistent with a JT8D than a RB211. The only measurements that were done on parts were from photos and estimates by looking at "the person standing next to them in the photo".... freakin joke...lol... the estimates and speculation can be found on
http://www.aerospaceweb.org/question/conspiracy/q0265.shtml
None of these parts were tagged and matched with the aircraft mx logs... as far as i know. If anyone has the report, i'd appreciate a link. I offer no theory or speculation... just doing research... Thanks again guys...