BATTLESWARM: The Cardboard Drone Dilemma. “Uncle Sam is the operator of billion dollar B-2s and fleet supercarriers. Enemies capable of getting cheap drones within striking distance of those assets could put a world of hurt on the Pentagon.”

A military analyst account I follow on Twitter noted that American jets (mostly) own the airspace above 3,000 feet but that drones (not necessarily ours) own the airspace below. That was a year or more ago and, at best, the situation hasn’t improved.