The (linked) NY Times article mentioned an interesting detail: the “cold gun” that was handed to Baldwin (and announced as such) was ostensibly loaded with inert/dummy bullets. But other accounts say the weapon was ostensibly empty/unloaded. Either scenario would seem to meet the definition of “cold”: a gun incapable of firing any ammunition (because the bullets were inert or because there were no bullets at all). The difference, however, could be crucial to the case. The prosecution will no doubt claim that it was Baldwin’s responsibility to ensure that the “cold gun” was, in fact, “cold.” And in the case of an unloaded weapon, this would involve a simple check of the revolver’s chambers. With dummy rounds, on the other hand, Baldwin would have had to unload the gun and confirm that each and every round was not live. And this is not a quick inspection — because live and dummy rounds are superficially indistinguishable. (Indeed, that’s the point of a “dummy.”) Bottom line: it seems highly dubious that the crucially important diagnosis of live vs. dummy vs. blank should ever fall upon an actor. That’s the job of the armorer.