Its a concern, definitely. Every new weapon eventually falls into enemy hands. Ultimately we'll have drones that drug soldiers and non-combatants rather than

Its a concern, definitely. Every new weapon eventually falls into enemy hands. Ultimately we'll have drones that drug soldiers and non-combatants rather than kill them. And that disable infrastructure rather than destroy it. And we'll have drones that do battle with drones, and even search out and destroy drones, or follow them home. The most technically sophisticated will continue to have an edge. And, no, that doesn't prevent unintended consequences. Inventing planes that can break the sound barrier didn't prevent 9/11 either.