[youtube https://www.youtube.com/watch?v=w465MHsvYpg&rel=0&hl=en_US&feature=player_embedded&version=3%5D

Ten years after the World Trade Center attacks in New York City, new arial, close-up footage of the event has emerged on YouTube. Shot by the NYPD Aviation Unit and only posted this Sunday, the 17-minute video shows the aftermath of the collisions shot from a police helicopter surveying the scene, including the oh-shit moment – and the subsequent onlooker reactions – of the first tower’s collapse.