Correct, the defender is guilty of killing someone, but he still made the correct choice, regardless if he goes to jail for it. You don't kill them because you can, I'm talking about when you don't have time to think, so your head went to the first thing that we can think of doing, protect yourself, if we came from animals, then we would make some choices that they would make in certain cases when you don't have time to think about it, if a predator is attacked by another predator, chances are it defends itself, it defends itself because it can, it has the strength and the tools (teeth, claws, etc.) if it weren't a predator, it wouldn't have those things, so it would run away. Let's say you have a gun in your hand, someone pulls out a gun and starts to aim at you, you don't try to dodge the bullet, you use the gun and shoot him first, you don't think of where to shoot to not kill him, it's life or death so you had to make the decision quickly