On the morning of September 11, 2001, brothers Jules and Gedeon Naudet were working on a documentary about a rookie New York City firefighter. Hearing a roar in the sky, Jules turned his camera upward - just in time to film the only existing image of the first plane crashing into the World Trade Center Tower 1. With cameras rolling, the Naudets follow NYC firefighters into the heart of what would be known as Ground Zero. A striking tribute to real-life...