I imagine that the range of the Aircraft was directly proportional to the power of the transmitter, and that they had multiple takes in multiple areas. As it was raining near our lady liberty, and in the other city-scapes the weather is quite nice. I am glad to see that they coordinated with authorities, but goes to show how easy it could be for "others" to do similar for "bad" reasons.
I didn't see any footage of them really flying in the city, between high-rises and sky-scrapers. I wonder how the wind patterns and flying characteristics in the urban canyons would affect a small aircraft like the one they used.
Those guys definitely had skills. Pretty cool... thanks for sharing this.