Schwarz: So one of the things that stuck out is there are two jet engine parts that are available in the photographs that were posted. You know people got them from different directions - some of it was FEMA, some of it came from the news media. But there is two parts on there that I had seen before - but I have been in a lot of shops because of what we do with composites and what we do in aerospace with nanotechnology. And I really couldn't put my finger on what it was that I was looking at because it was kind of beat up and smashed. So, we went back and started looking at just about every type of jet engine, all the way back to about 1952 or ?53, as to what those could possibly be - those components. And we finally found it.

Now, let me describe to you what it took to get this. Somebody has gone through the internet and done content blocking to where if you actually know the part number and you are actually looking for a diagram picture, you know like an auto-cad drawing or looking for a photograph of this particular item to prove that it was not a 757 that hit the Pentagon. We had to get the help of some people out of Russia and France and Germany and Japan to go around content blocks on the U.S. search engines and we finally found the photograph.

Stadtmiller: And why is this significant?

Schwarz: Why it is significant is that the jet engine rotor, this is called, one of the parts that is visible in the FEMA information, people have been trying to say that it's what's called an AB 211 or Honeywell APU, auxillary power unit from a 757. It is not an APU component. It is what is called a front compressor front hub assembly. And the giveaway is if you look at the edge of that disc, it has metal-like cleats on it. Those metal cleats are what the front fan is actually attached to, the fan blade. So what we are looking at here is an older jet engine technology and we've been trying to dig back in to find out what type of jets that is on.

[...]

Schwarz: The part that is laying there in the FEMA pictures outside the Pentagon is definitely not a 757 component.

Stadtmiller: Gotch 'ya. Okay, now I understand. Now is there applications for that engine and the type of aircraft that it was on?

Schwarz: Yes, in fact, there's two types. One of them, they use it on the, what's called an A3 Sky Warrior. And the A3 Sky Warrior has had, at last count, four different types of jets [engines] on them. But some of it is older technology going all the way back to the Allison J33, and Allison J71, which all of those are burned up years ago. It doesn't even pay to try to repair them anymore. And what this is is either a Pratt and Witney 57 or a Pratt and Witney JT8D. Now that is an engine that is primarily used on earlier versions of the 737. But it is also used on an A3 in it's current model, current version. And here is what this says, this is just a little footnote, underneath this picture we gave [Elliot] Spitzer - it said your reliable source for turbine engine fan blade repairs is now providing total overhaul capability of JT8D fan hub assembly repair. And I'm not going to say the name of the company. Spitzer's office is looking into this. This is the only approved source to overhaul both blades and hub assemblies - an FAA approved shop.

Stadtmiller: So what was it that hit the Pentagon? Any guesses here?

Schwarz: I think it was an A3 Sky Warrior.