Sky News 
Friday, Sept 11th, 2009
Dramatic, previously unseen, footage of the moment the second plane crashed into the World Trade Centre on September 11, 2001 has been released.
The video was shot through a chain-link fence and shows black smoke pouring from the North Tower as a hijacked jet smashes into the South Tower.
The impact creates a massive fireball in the second skyscraper and then smoke billows upwards.
Papers are seen flying through the air with some of them ending up in the filmmaker’s hands.