This Sunday marks 15 years since the terror attacks on the Twin Towers in New York.
Our correspondent Rachel Bullock has been to meet a film maker from North Yorkshire who was in New York when the second Twin Tower came down on September the 11th.
Paul Berriff was knocked unconscious but his camera captured the footage.
It was then used in a documentary produced with ITV Studios in 2002.
Now Paulruns a gallery in Leyburn and has been reliving that day - and the impact that moment in history had on him: