[JimRed]

Are the Red Chinese encamped just south of the border, or hidden in a Blue city nearby?

[Rurudyne]

Interesting thought.

They didn’t say what kind of drone, if one of these helicopter things or fixed wing.

[PGR88]

Are the Red Chinese encamped just south of the border, or hidden in a Blue city nearby?

You can buy off-the-shelf drones on the internet that can fly 4 miles high in good conditions. They aren't cheap (>$1,200 or more). The FAA doesn't like it, but they shouldn't pretend its something unexpected.