The above 17 minute long video of 9/11 footage was taken by a New York police helicopter crew and was recently obtained by website cryptome.org through a FOIA, (Freedom Of Information Act), request to NIST, (National Institute of Science and Technology).
The video isn’t the best quality but it’s impact certainly isn’t lessened. On their YouTube page Cryptome mention that: “NIST investigated the WTC tower collapses and collected large amounts of evidence from officials and individuals. While much of this evidence has been released to the public, more is still withheld.”
We’ll probably need to wait another ten years to see the rest of the evidence.