This unprecedented and exclusive insider's account of the World Trade Center attack, which contains the only known footage of the first plane striking the World Trade Center and the only footage from inside Ground Zero during the attacks, will also include footage from events marking the 10th anniversary, as well as new interviews with many of the firefighters who were featured in the original program. They will discuss how their lives, families and the world have changed in the 10 years since the tragedy - some for better, some for worse. Viewers will also hear from New York City Fire Department health officials as they discuss some of the health issues that have plagued firefighters working at Ground Zero.