Filmmakers Update 9/11 Documentary

French filmmakers have updated their haunting, award-winning film "9/11."

Filmmakers Jules and Gedeon Naudet and were supposed to be making a documentary about New York City firefighters, following a probie named Tony Benetatos as he went from the academy to his assignment with Ladder 1.

Instead, on that September morning in 2001, they were witnesses to history.

Their documentary "9/11" aired on CBS in 2002. To mark the 10th anniversary of the terrorist attacks, the French-born brothers – along with co-director James Hanlon – have updated the film.

Titled "9/11: 10 Years Later," the filmmakers will look into the lives of the firefighters who appeared in the original documentary, as well as some of the ongoing health problems of the first responders. They will also tour the ongoing construction efforts at Ground Zero.

The Naudet footage is still some of the most comprehensive on-site coverage of the World Trade Center attacks and rescue attempt.

Jules Naudet was with the battalion on a routine call about a gas leak when American Airlines Flight 11 slammed into the North Tower of the World Trade Center. The sound of the incoming plane, as well as the collision, is caught on camera, as are the firefighters' uncensored reactions.

As Jules headed with the unit to the North Tower, his brother Gedeon filmed reactions both back at the firehouse, and of the crowd on the street just below the World Trade Center. He also captured the impact of United Airlines Flight 175 as is crashed into the South Tower.

The film is a chilling testament to the tragedy and heroism of that day, offering a rare, unedited look at how the attack unfolded before everyone's eyes – from the firefighters responding to the scene inside the building, to the people on the street trying to comprehend what was happening around them. There's courage, confusion and fear in the faces of those being filmed.

The new documentary will air Sunday, September 11.

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