While I don't particularly care for Alec Baldwin, I agree with up2it, in that he probably didn't know that he pulled the trigger. The very first time I went to a shooting range with my .40 caliber Beretta, there were several times when I pulled the trigger without realizing it until the gun recoiled. After practicing the proper way to hold the gun at home after that, I finally got into the habit of taking my finger off of the trigger after each shot, and placing my trigger finger on the side of the gun, like you're supposed to do. Now I do it automatically without thinking about it. If the gun that Baldwin had, was already cocked, then by placing his finger on the trigger when he was handed the gun, like an untrained person would do, it would be an unconscious move to pull the trigger. Like up2it also said, why would there be live ammo on a movie or TV set anyway? The person who loaded the gun should have known better than to put real ammo in a gun on a movie set....I mean, if the gun was going to be used in a scene, then when Baldwin was in that scene, he would have aimed the gun at the "victim" in the movie, and pulled the trigger, so the actor who was playing the victim would have been shot and maybe killed.