That one was done, I believe, by two Franch brothers. It was a terrific documentary.
Holy crap, how did they recreate this the way are showing now?
It is an awesome program originally aired by CBS.
The intent of the brothers was to pick a rookie fireman and a do a documentary about whether he could make it through his probationary period.
One of the brothers had a relationship with one of the firefighters that served in the shadows of the tower.
After gradutation they happened to pick the the rookie headed to the very department house that was assigned a gas leak just down from the towers the morning of 9/11.
One of the french brothers turned and got American 11 going into the north tower.
It is the only footage you'll see of the command post being set up in the north tower minutes after the impact, watching wave after wave of firefighers arrive and be deployed including the fire house's brother.
I can't recommend it strongly enough.
I would also heavily recommend seeing World Trade Center.
I saw it last night and it was not "sanitized" to not show the planes going in, it was shot from the perspective of where the PAPD (Port Authority Police Department) were that day and to start the day they were not near the towers.
That's the one. It's excellent. I'm anxious to see the new one, too.
They were scheduled to follow some members of the NYFD on that day. It was a coincidence that the terrorist occured then, but the brothers/filmmakers rose to the occasion. A painful film to watch, but powerful.