This was on the site too
"OUR TAKE: UFO freaks are going to have a field day with this one. Although many flying disc sightings are attributable to blimps, balloons, clouds, reflections, meteors, or heat distortions, a small number are attributable to prototype aircraft - a notion the submitter even mentions possible.
More prototype aircraft are spotted and reported mistakenly as UFOs every year, and UFOs are such a historically popular concept that more than one ambitious person in the past has attempted to manufacture them. It seems entirely probable that some agency has finally been successful, given that even the Nazis were secretly experimenting with flying discs as far back as World War II.
The thing that strikes me as most clever about this craft is its camoflauge; it really moves like and appears to be a blimp,
a common sight over New York. If I were a pedestrian, I probably wouldn't even look twice. However, when it moves, it glides so rapidly that the naked eye cannot easily track it... A very clever idea
on the part of the designers, whoever or whatever they are, and a perplexing piece of footage which merits much closer examination."
-Nore