[nknighthb]

They won't even know they're there. Small, quiet drones thousands of feet up are practically invisible.

[Argorak]

Once it's known that the police uses such machines, they know that they're there. Don't expect the conclusions to be in any way rational.

[cma]

he doesn't mean they won't generally be there. he just means that they won't try to erratically avoid specific drones.