September 11, 2001 is a date etched into the memories of people across the world, and for the most haunting of reasons.

Each year millions of people come together, online or in-person at various vigils, to pay tribute to the innocent souls who perished when the Twin Towers were targeted in arguably the most infamous terrorist attack in history.

The pain from that fateful day yet resides in the hearts of people all over the US – time heals all wounds, they say, but even now, 22 years on from 9/11, the shock is lived anew each year.

Despite being one of the most well-documented catastrophes ever to occur – resulting in the deaths of almost 3,000 people – there is still video material from 9/11 that remains relatively obscure.

One such video is doing the rounds now, reportedly showing the moment the Twin Towers began to collapse from below.

*Viewer discretion is advised.

Reporter NJ Burkett was reporting for ABC from the street below the World Trade Center after the first plane had hit and the South Tower began to collapse.

Burkett and his team were among the many forced to run for their lives – the reporter spoke candidly about the footage in 2021, on the 20th anniversary of the tragedy.

“It’s very difficult to look at the video, it’s very difficult to hear my voice in that video because had things gone the other way that would be the last 20 seconds or so of my life,” he explained.