This line of thinking is entirely foreign (and vaguely repulsive) to me. Can I imagine a situation where I'm forced to cause the death of someone in order to defend those close to me? Vaguely. But I would be racked with guilt for the rest of my life.
In any case, AI drones will largely be used for "defense" in the euphemistic sense.
In any case, AI drones will largely be used for "defense" in the euphemistic sense.