Film shows helicopter view of 9/11
New video footage of the September 11 attacks has emerged, taken from a police helicopter hovering near the burning World Trade Centre towers.
The helicopter hovers near the towers in the hope of rescuing survivors from the rooftops, only to find no one there as the buildings topple and smoulder.
The video is part of a cache of information from the attack handed over by city agencies to the US National Institute of Standards and Technology, the federal agency that investigated the collapse.
The 17 minutes of footage shot from a New York Police Department air and sea rescue helicopter shows much of what has already been seen but still shows a chilling aerial view of the burning twin towers and the apocalyptic shroud of smoke and dust that settled over the city.
Only police helicopters were allowed in the airspace near the skyscrapers, and the officers were the only ones shooting images from above. The helicopter flies over the roof as huge grey clouds billow, and away as the video pans out to lower Manhattan. A sea of people can be seen fleeing the area on the clear, sunny day clouded with billowing smoke from the towers.
The helicopter lands eventually across the harbour from the towers and the camera pans into the helicopter, showing ropes that would have been used to rescue people from the roof.
"We got out of there at the right time," one officer can be heard saying.
"I know," another officer replies.
The helicopter crew watches in the distance as the North Tower falls, the video zooming to capture the image of the building going down and a huge plume of smoke puffing up.