It is a very good documentary. I even downloaded the 9-11 recordings from the FDNY so that my children and others in my family could hear the voices of the brave men and women who served on the day and lost their lives. It is a very touching documentary. You can donate to many of the firefighters families by buying bracelets with their company or name on it at
http://www.thebravest.com (not my site just an fdny site). Proceeds go to the children of the fallen firefighters.