What do you think of the Air Force One flying so low in the sky of NYC?

regarding the issue of how can they know its an Air Force One, i would like to correct myself that its a Boeing 747 they were looking at but one of the plane is called an AF1 when president obama is using it. i came cross the news and planted the impression that whether its referred to as a Boeing 747 or AF1 doesnt make a difference. thanks for helping to correct the blunder :) so, what do you think of this whole incident?

i see.. they probably meant a "presidential plane" (the skyblue colored one, if i'm not mistaken, coz as far as i know, theres more than one of that plane), but not necessarily AF1. i guess its understandable for them to be worried since its their town that was attacked back then. but i don't think a known presidential plane flying at low altitude should make such a fuss. i mean.. its the president's plane.. its not exactly a stranger to the place.. but if its an ordinary 747 flying at low altitude.. then that should really be a cause of worry.. considering the huge size of a 747, it shouldn't be flying at low altitudes, unless its going to land.