"Unless of course the ticket numbers of the passengers and the plane did not correspond. Then the passangers would never even know they were on United 93."
Is the flight number identified on the plane?
No. If my understanding is right (and I'll research the logistical protocal of groundcontrol among the airlines) flight numbers are assigned to pilots and deligated through groundcontrol.
There would be no way for passangers to know that they were supposedly on United Flight #93. This was simply the identification given from groundcontrol in cleveland ohio.
The report that United Flight #93 came from a United Airlines press release. Although no one from United Airlines or even Boeing was at the conjectural 'crash site'.
One thing that is absolutely certain is this: There is absolutely no visual proof on film or through eye witness testimony that an aircraft crashed in Shanksville, PA.
The discription given of the 'scene' by the witness in the video (area of approx. 10-15 feet in diameter sounds nothing like a large aircraft impact.
Some say that the speed of the aircraft left little to no physical evidence on impact.
This is fallacious. Airplanes do not simply 'vanish' on impact.
Even the spaceshuttle Columbia, whose speed far exceeded that of the supposed fight #93 left visible and physical evidence behind. -- and it was literally being vapourized in the stratosphere!