...of course it is. They were setting up a scene, not doing or rehearsing a scene, so there was no reason to point a gun at anyone and pull the trigger, especially if one did not clear the firearm themselves first. Very basic gun handling, anything else is reckless and negligent. Since Baldwin was also Producer of the film, he has to take responsibility of overseeing the hiring of all employees and the obtaining of props. He knew there had been live rounds on the set before the incident and also that there has been three NDs on the set in the days before the incident. One reason several employees had quit. There was so much wrong going on that set, it was just an accident waiting to happen and it did. He pointed a loaded gun at an innocent person and his recklessness killed her. Pretty simple.