Where’s the kaboom? There was supposed to be an Earth-shattering kaboom!
On earth the airports are very close to population centers. But going 500knots, it doesnt take very long for the plane to be well out of town. SO, why all this worry about quiet planes when we could just make it protocol to clear Mach 1.0 in certain places, yadda, yadda, yadda. It aint that far to out in the country, especially as the crow flys.