This 17-minute video from 9/11/01 was just released not-too long ago. It was shot from the vantage point of a NYPD helicopter.

According to Gawker, the National Institute of Standards and Technology requested the 17-minute video through the Freedom of Information Act, and the video was sent anonymously to the secret-sharing website Cryptome, which posted it. The Institute investigated the 9/11 attacks.

*Note: There is swearing in this video