There were a lot of interviews with...
...family members and others who had cell phone conversations with the passengers as this was happening. One that I found particularly interresting was a woman, who talked as if her husband was the big leader of the rebellion. She said that when he told her that they were going to try to regain control of the plane, she told him to stay out of it and not get involved. :chairshot
Oh, by the way, one would get the impression that Todd Beamer's only contribution to the whole effort was to say "Let's Roll!". But he was in contact with a telephone operator or someone like that. Everyone else seems to have been in contact with a family member, every one of whom talked as if it was their relative who was the leader.
Also, from the cockpit voice recorder, we find out just how ignorant the terrorists were. After the passengers had gotten past the guy outside the cockpit door and were at work trying to break it down, the leader of the terrorists told them to hold the fire axe up in front of the peep hole so they would see it and be afraid, not realizing that it would not appear very threatening when viewed from the other side. (as if anyone was looking through the peep hole while they were trying to break down the door, anyway). From the recording, they determined that the passengers did get into the cockpit.