Also, setting aside what Baldwin should have done, what are actual legal responsibilities for handling guns in this context?
I am familiar with the 'laws' that gun enthusiasts memorize; don't point guns at people, assume gun is loaded, etc.
Are actors legally required to undergo training before handling firearms? Presumably not in New Mexico, since a state senator has only just introduced a bill mandating it. Is it against the law to point a firearm at someone without the intent to intimidate (the legal requirement for 'brandishing') There is clearly no intent to intimidate here.
Baldwin is possibly guilty of running a movie production so shoddily that injury risk was elevated, but I am failing to see what possible laws he actually broke. He didn't intend to kill anyone, and he hired someone to ensure the harmlessness of the weapons on set.
Involuntary manslaughter is a complex crime to define, but my understanding is that it requires someone to die due to negligence or recklessness. Given that there was a paid armorer on site, I don't see the argument for this charge to be particularly strong.
My prediction is that the armorer may face charges of negligence depending on the contractually defined expectations of their job, they will be unlikely to work in that capacity ever again. Baldwin will endure elevated levels of scorn.
I'm sorry but I can't see how this is anything more than an incredibly stupid workplace accident. OSHA regulations cover movie sets, but again, what OSHA regulation was violated?