New footage documenting the 9/11 attacks on the World Trade Center in New York were released on Monday, featuring a 17-minute video filmed by an NYPD officer circling the collapsing towers in a helicopter.
According to the American blog The Gothamist, the footage was sent anonymously to the website Cryptome, after it was held up by the National Institute of Standards and Technology.
The video shows the first tower imploding upon itself as the NYPD officers shouted "it's gone, the whole tower, its gone! Holy crap!", followed by the second tower tumbling into an enormous black cloud of smoke and ash over the city.
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