You still have to protect everywhere though. That’s the asymmetry I mean. All the adversary needs to do is work out how to overwhelm whatever you’ve got. Also,

You still have to protect everywhere though. That’s the asymmetry I mean. All the adversary needs to do is work out how to overwhelm whatever you’ve got. Also, frankly the idea of having that many drones flying around the whole country is probably just as terrifying as an actual drone attack. Who is going to be in charge of those ‘defensive’ drones?