“Lethal force” is its own definition: it is lethal, which means the target dies. “Fast response” is already defined as “fast enough to stop a killer” which imp

“Lethal force” is its own definition: it is lethal, which means the target dies. “Fast response” is already defined as “fast enough to stop a killer” which implies that these things will be deployed 24/7 waiting to be called into service at a moment’s notice. That means you are setting up expensive infrastructure and a need to justify the ongoing expense which means a police force predisposed to using lethal force for any encounter.