From the description at that video's page at YouTube:
Within a month of 9/11, NYC fire commissioner Thomas Von Essen, a 30-year NYFD vet, set up interviews with fire, port authority police and EMT first responders to record their initial impressions of what they experienced on Sept 11.
The stories of 503 men and women ran to 12,000 pages. Graeme MacQueen, a recently retired religious studies professor, read them all. In addition to the heartrending nature of many of the stories, the consistent theme was of hearing, feeling and seeing explosions, a controlled demolition. Failure to officially acknowledge this evidence is further proof of an inside job. MacQueen (McMaster University, Ontario, Canada) narrowed down the testimony of 118 first responders as especially court-worthy testimony. But he notes the entire testimony was excluded by the 9/11 Commission, as well as the National Institute of Standards and Technology (NIST).
http://www.youtube.com/watch?v=IwQa5eokieYFrom the notes of the 9/11 Commission Report
(emphasis added; embedded links added):
9 Heroism and Horror163. For evacuation instructions, our analysis is based on more than 100 interviews we conducted and
our review of 500 internal FDNY interview transcripts. For three firefighters hearing "imminent collapse," see FDNY interview, transcript 20, Battalion 10, Jan. 10, 2002
(link); FDNY interview, transcript 23, Battalion 7, Jan. 21, 2002
(link); FDNY interview, transcript 21, Battalion 8, Jan. 9, 2002
(link).
209. Based on more than 100 interviews we conducted and
our review of 500 internal FDNY interview transcripts, we conclude that out of these 32 companies, all on-duty members of 19 companies are likely to have known to evacuate (Engine Companies 1, 4, 7, 9, 15, 16, 21, 24, 28, 33, 39, and 65; Ladder Companies 1, 5, 6, 8, 9, 110; and Rescue 1).We also conclude that at least some members of each of five companies knew to evacuate (two firefighters from Ladder Company 10; the officer of Ladder Company 20; all but the officer of Engine Company 10; at least two firefighters from Squad 18; and at least three firefighters from Engine 6).We do not know whether members of the eight other companies knew to evacuate (Engine Companies 55, 207, and 226; Rescue 2, 3, and 4; Hazmat 1; and Squad 1) because they all died, and we have come across no on-point eyewitness accounts related to their operations. It is very possible that at least some of these firefighters did hear the evacuation order but nevertheless failed to evacuate in the only 29-minute period between the collapse of the two towers. In addition, it is possible that several of the eight companies for which we have no record of their receiving evacuation instructions were in the South Tower and thus died in its earlier collapse.
http://www.9-11commission.gov/report/911Report_Notes.htm - Make7