I don't know about the US, but in the UK there are 'sky lanes' that helicopter pilots must follow. And in all honesty, this would benefit Amazon, because then

I don't know about the US, but in the UK there are 'sky lanes' that helicopter pilots must follow. And in all honesty, this would benefit Amazon, because then they don't require drone pilots. Just programme the 'lanes', rudimentary GPS and proximity sensors and keep the speed down so that collision-avoidance can be activated with sufficient time.