I did this once a while back.
Much confusion has been circulating on the internet in the past few years about some of the occurances that happened on 9-11-2001. The official story states that Flight 93 ran into the ground at 550mph and 99.9% of the aircraft vaporized. Check out the photos from the Flight 93.
Civilans arrive first gawk at hole. No smoking in the hole. No smoke in the trees. It is still morning and the sun falls to leave the treeline in shadow.

Yellow and white suited people arrive. Scare off the civilians and begin doing stuff. No one knows who these people were. No one knows what they were doing. Notice the exact location of the yellow suited man on the far side of the closeest foreground - we will call him Bob. Bob is going to plant something.

They continue to do it. There is no sign of any smoke coming from anywhere. The trees are still pristine. Bob surveys hit plant job.

Smoke! Fire ! The third guy from the left looks down at what just began smoking in front of his shoes. The wind blows gently from left to right in the frame.

Fire pours from the treeline. The yellow and white suits begin to melt into the treeline.

The fire department now arrives and is cleared to enter - only two yellow suited men remain. Whatever Bob planted now comes to life as smoke gently comes from exactly what he was standing over in the second and third photo.

The news arrives. John Q. Public watches. The lie that is the crash site becomes immortalized.
So let us start at the beginning.
Flight 93 and everyone aboard it went missing.
Yes.It was reported to have landed later that morning in Cleveland.
Just one AP report said so.It crashed in Somerset County, PA.
For the first time in avation history a 100 ton aircraft vanished into a crater.Look at the pictures of the scene of flight 93 alleged crash. What about it is unlike any other aviation mishap in history?
If you think that it was shot down. Great. But do your damn homework. Being shot down rains debris over a large area. It rains humans down on a large area. Dense parts of the aircraft (gear and engines) make ballsitic impacts on the ground. Tail sections and other light parts break up but are otherwise unvaporized.
Keep in mind to vaporize metals the material you want to vaporize has to be in contact with explosives or a plasma cutter or the sun. The vaporization radius on conventional explosives is not very large - comprising, at best, 2x the diameter of the explosives. The blast however is exceedingly large, but blasts only blow materials apart - it does not vaporize. I worked in demolitions back in the Corps.
So if you wanted to vaporize a 100 ton commercial airliner what would you have to do ?
1 - Fly into the sun. Yeah that'd do it.
2 - Plasma arc all of it - bit by bit with electricity. Sure that'd take years with all the worlds cutters.
3 - Coat all of it with roughly 50 tons of high grade military explosives. This, of course, could not fly. No one has suggested this. It is silly.
Re-entry into earths atmosphere will not vaporize - If you all recall the Columbia breaking up over Texas. Everything from landing gear to helmets to tiles to other items were recovered from a wide swath of the southern United States.
What was recovered from Columbia?

Use the pictures and physics and past crash data. No plane crashed here. Look up craters for missles and bombs.


See a commonality? For all intensive purposes the crater in Somerset county, PA is a missle crater. Bombs usually create circular craters and missles create angular craters. So you can say that it is a missle impact crater with a high degree of certainty.
Since I am no expert in avaition technology I looked at crash scene photos of the past.
There is a similar crash in avaition history where a commercial airliner hit the ground at full speed.
Helios Airways Flight 522 crashed on August 14, 2005 at 12:04 EEST into a mountain north of Marathon and Varnavas, Greece. Rescue teams located wreckage near the community of Grammatiko. Pictures.

Entire Tail section.
There are more pictures of the Helios crash - look them up on google. But that 1 picture alone has more wreckage that both the flight that hit the Pentagon and Flight 93 combined.
Some say that Flight 93 was shot down. Well that has happened before as well. (note: the method of a plane exploding be it internal(bomb) or external(missle) have little or nothing to do with the fact that indeed - exploded)
Pan Am Scene (exploded at altitude)
Cockpit

Engine Parts


Bodies

Reconstruction


Flight 800 (shot down or exploded at altitude)




See what I am saying about wreckage remaining after shoot downs?
If you think flight 93 crashed in somerset county re-read and review this post. Perhaps review all of the pictures of flight 93 crash site. Repeatedly - look for aircraft parts.
If you think flight 93 crashed elsewhere and escaped all eyewitness accounts or pictures being taken of it - then you are silly.
If you think flight 93 landed somewhere because it didnt crash somewhere else; congratulations you do indeed know how gravity works.