of a building in new york city. why was the pilot flying in restricted air space? this catches the chopper flying erratically before it went down. here to lend us exetpertise is mary schiavo, transportation analyst, and miles, i want to start with the video. i want to put it up again. to my untrained eye, this helicopter is doing crazy things. i mean, it goes into a dive. a steep dive i've never seen a helicopter do before. what do you see when you watch this video? >> alisyn, you don't have to be a veteran pilot to look at that and say, something is drastically wrong. what it looks like at the outset is a pilot that somehow found himself in the clouds and what we call in piloting is spatial disorientation. you lose the horizon. you lose your way. one of the ways to get out of the situation is dive down, get below the clouds, and get your bearings. that's what we saw.