In the "September 11 - The New Pearl Harbor" documentary (1:46:45), a claim is made that Jeremy Glick used a cellular phone to make a roughly 20-minute phone call to his wife and mother-in-law. While it is known that he did make a phone call, the documentary emphasizes that it is highly unlikely a 20-minute long cellular phone call could be made back in 2001, when the plane was flying an at altitude of 39,000 - 10,000 feet going around 400 mph.
To support their claim that Glick made a suspicious phone call, they cite two FBI documents.
Lyzbeth could not hear any unusual sounds in the background of the call and the connection was extremely clear, "as if he was calling from the next room."
However, I could not find the second document, which is far more important as it supposedly notes that
Glick saw hijackers on the plane, used a cell phone & called Makely
Cell phone communication was lost at 9:55 AM
(And is the document they cited that specifically states a cellular phone was used)
I have looked around the FBI Vault, but have been unable to find that specific document. I also found a edited, supposed transcript of the phone call involving Glick, where his mother-in-law makes conflicting remarks regarding whether or not he used a cell phone: "He's in the airplane with a cell phone", "He's on the airline plane phone. He's not on his cell phone" (x2).
Is the cited FBI document in the documentary real or fabricated, and did Jeremy Glick use a cellular phone to call his wife & mother-in-law while onboard Flight 93?