When I was a kid watching westerns on TV, many a good guy shot a gun out of the hand of the bad guy. It stopped the attack and, it seems, stung a bit. Funny stuff! Saying that, yes, it happens. Tunnel vision is a thing. People tend to aim at what they’re looking at and what they look at when their life in on the line is the weapon that may kill them. Not the weapon, obvs, the person holding the weapon. Where was I? Batman . . .