 when he's not supposed to cock the hammer, you will see him put his finger on the trigger when his finger's not supposed to be on the trigger. Even if he intentionally pulled the trigger like the prosecutor just demonstrated, that doesn't make him guilty of homicide. He did not know or have any reason to know that gun was loaded with a live bullet. The gun was double checked, verified it was a cold gun, not an actor's responsibility to check. Safety was ensured before.