New Footage Released of 9/11 World Trade Center Attack

This video -- shot from an NYPD helicopter as it circled the World Trade Center -- appeared on the internet Monday.

After a Freedom of Information Act request to the New York Police Department the video was obtained by the National Institute of Standards and Technology.

The almost 17-minute video doesn't show the collapse of the first tower, but it does provide an audio recording of the officers' reactions.

[Unidentified Officer]:
"It's gone. The whole tower. It's gone. Holy Crap. They knocked the whole freaking thing down."

[Unidentified Officer]:
"It's down. The second tower is down. Holy. God. Damn. My God."

September 11, 2011, will mark the tenth anniversary of the attack that killed almost three thousand people.