I wasn't aware that all of those weapons were DAO (double action only). I never owned a Glock, because they don't fit my hand well. That makes me doubt the competence of that accidental misfire LEO even more, since DAO pistols require a significant trigger stroke before discharge. I can see accidentally touching the trigger in a dark theater if he was being careless, but grabbing the gun in a firing grip hard enough to move the trigger half an inch is beyond careless. He is a correctional officer at a local prison, so I doubt his weapon is part of his daily routine. It is disconcerting how many people put their finger straight on the trigger when shouldering a rifle. I work with kids, and we shoot BB guns with hair triggers. No matter how many times I tell them to keep off the trigger, 2 out of 10 will fire a BB before they even look through the peep sights (I'm standing right there, so the BB hits near the target at least). Ready or not, that was their turn shooting, so their actions do have consequences. I always compliment the kids that keep their finger straight until they are on target.