Originally Posted by
Davef68
I remember the same questions were asked after 9/11.
IIRC, on 9/11 the authorities quickly closed all airspace to civilian traffic - even the news choppers needed to land ASAP - making rooftop rescue a moot point. Unless they could have gotten military choppers there quickly those poor souls on the upper floors were doomed as soon as they closed the airspace (and off hand I can't think of any military airbases close to Manhattan).
In the case of the Vegas MGM, there is a large military airbase just north of town...