I always imagined a system where robots would seek targets and ask a remote human for clearance to destroy.

Such a system could have a 1:20 human to robot ratio with a human just repeated pressing a red button like George Jetson to issue a kill command.

In Connecticut recently, there was a teenager who mounted a hand gun on a custom quad copter and posted a video of it shooting live ammo on his own ranch. I was shocked by how well the recoil was handled. The future is now.