Sure that should always be the case. But this time it wasn’t. And because of his actions someone died. As an actor and a producer he should never have even had a chance of firing a live round while they weren’t filming, but he did. If the round never hit anybody this would be an entirely different case, unfortunately that’s not how it went down.
Maybe it’s just me but the military just casually strolling up at the end never fails to make me laugh