A routine call suddenly became a moment frozen in American history. On the morning of September 11, 2001, filmmaker Jules Naudet stood near the World Trade Center with FDNY Battalion Chief Joseph Pfeifer when the roar of a low-flying aircraft made everyone look up. Jules raised his camera and captured American Airlines Flight 11 striking the North Tower—one of only a few known recordings of the first impact. Minutes later, he followed firefighters from Engine 7, Ladder 1, and Battalion 1 into the building. His brother, Gédéon, remained at their Lower Manhattan firehouse, unaware of how far the day would carry them apart. The brothers had spent the summer filming the working life of probationary firefighter Tony Benetatos. Their modest documentary project would soon become an irreplaceable record of September 11.

Inside the North Tower’s lobby, Jules documented fire chiefs establishing a command post as first responders headed upstairs and office workers moved toward the exits. The camera captured confusion, damaged surroundings, interrupted communications, and firefighters slowly realizing the scale of the emergency above them. Jules deliberately turned away from people suffering severe injuries, later explaining that some moments should not be shown. When the South Tower collapsed, the lobby shook and darkness closed around those still inside. With the brothers separated and unable to reach one another, each was left facing the same terrifying question: Would the other one make it home?

Jules remained beside Chief Pfeifer and the firefighters as they searched for a safe path out of the North Tower. His camera light reportedly helped illuminate the smoke-filled surroundings while the group moved through the building and eventually escaped before its collapse. Outside, Gédéon recorded the reactions of stunned New Yorkers while desperately trying to learn where Jules had gone. The footage was not a calculated investment, an insurance record, a mortgage document, or evidence prepared by an attorney for court; it was the work of two brothers who happened to be standing at the center of history. Later, the material required careful handling like a treasured family estate because it preserved details that no written account could fully reproduce. When Jules finally returned to the firehouse, the brothers’ emotional reunion supplied the human ending neither had known they would receive. Their recordings became the foundation of 9/11, the documentary released on CBS in March 2002.

Twenty-five years later, the Naudets’ work continues to draw attention because it shows the disaster largely through the experience of firefighters and witnesses rather than from a distant television studio. The documentary contains what the National September 11 Memorial & Museum identifies as the only video filmed from inside the Twin Towers during the attacks. Revisiting every recorded second was painful for Jules, yet he has said that confronting the material also helped him process what he experienced. For both brothers, completing the film became a way to honor the first responders who allowed them into their lives before anyone knew what September would bring. The footage remains difficult to watch, but its lasting meaning reaches beyond devastation. At its heart, it records people answering confusion with duty, strangers helping one another, and two brothers searching through an overwhelmed city until they were together again.