The cockpit voice recording (CVR) for Flight 93, reveals the number of hijackers. You simply observe what the hijackers say
and translate their words into the lowest number that word can represent and then add them up to arrive at the correct number of
hijackers.
From the official CVR
transcript, which was translated from the Arabic into English:
09:45:19 -- How about we let them in? We let the guys in now. ("we," two or more, "the guy's," or, "them," two or more, 2+ 2 = 4.)
09:45:23 -- Should we (2) let the guys (2) in.
09:45:25 -- Inform them, (2) and tell him (1) to talk to the pilot. (1) Bring the pilot back.
We (2) + them (2) + him (1) + the pilot (1) = 6.
"The pilot," is the hijacker Beamer referred to as being in first class, sitting by himself. He was the hijacker vital to their success.
The two hijackers in the cockpit can keep the plane in the air and turn it around but they lack the skills to guide it to their target.
The hijacker pilot was therefore kept out of harms way, away from anywhere he could be injured or killed by someone defending
the aircraft. By 9:53, he is in the cockpit.
9:53:35-- Let him look through the window. Let him look through the window.
There are now three hijackers in the cockpit. The first one is telling the second one to let the third one look through the
window. He is saying it in Arabic. This means that if there are four hijackers, there can only be one hijacker anywhere else
on the plane, since 3 + 1 = 4. None of the passengers, however, report they are now being held in the back of the
plane by only one hijacker. Nor do they report they have been held there by one hijacker for nearly half an hour, since
if there were four hijackers, two of them were in the cockpit, the third one was just sitting by himself in first class waiting to be
called into the cockpit and doing nothing, leaving only one hijacker to hold the passengers at the rear of the plane, by himself.
This is, of course, impossible and we eliminate it. As improbable as it may seem, there were six hijackers on Flight 93.
The evidence also shows there were seven hijackers on the other flights. Ann Sweeney and Betty Ong counted
seven hijackers on flight 11. This means that if the CIA and FBI combined got only one thing right about the 9/11 attacks,
(and that is a distinct possibility), it is that Flight 93 had one less hijacker than the others. 6 + 1 = 7.
There remains the question of how the hijackers got into the cockpit. To be continued.