It is also interesting in that there seems to be ZERO breeze when they are on the helipad, which is at or near the top of the skyscraper. At that height they should almost need to be harnessed to the sides so as to not be blown off the side of the building. Mission Impossible Ghost Protocol is again the perfect example as there are real stakes as you see Tom Cruise is being blown against the side of that building while he's trying to hold onto the side of the building with the spy gloves he has, and that building is half the size of this one. Then you add in the turbine which apparently makes a crapload of noise, so I have no idea how much soundproofing the rich guy would need to put into his penthouse to mute that out, because from my experience of having a hotel a mile a way from an airport, the room still shakes quite a bit from passing planes, so his room must feel like a giant earthquake the entire day.