Here's the uncomfortable answer:
Any round you fire which has the capability of neutralising the threat involuntarily, carries with it the potential for liability for damage caused to third party persons or their possessions.
Now you need to place on the "Balance Beam of Consequences" two weights:
1) What could happen to me if I don't fire a round that can neutralise the target
2) What could happen to me if I fire a round that does neutralise the target but also hurts an innocent bystander
Any round you fire which has the capability of neutralising the threat involuntarily, carries with it the potential for liability for damage caused to third party persons or their possessions.
Now you need to place on the "Balance Beam of Consequences" two weights:
1) What could happen to me if I don't fire a round that can neutralise the target
2) What could happen to me if I fire a round that does neutralise the target but also hurts an innocent bystander