for shit under stress, it follows an old tradition, and-sure enough- cops who can't shoot for shit means we need(say it in chorus!) MORE GUN CONTROL LAWS!!!
It's an ongoing complaint by gunnies that so many cops are lousy shots, and I think Uncle hits a big part of it: in so many places they've tried so hard to destroy the gun culture, and- to a large extent- succeeded, especially among those who really SHOULD be part of said culture. When you've got cops who only shoot when required to, and only care about managing to qualify, you get people who can't shoot well. And, as the saying goes, under heavy stress you don't rise to the occasion, you fall to your level of training. So if your level of training is "I have to shoot twice a year to qualify"...
Guy Dad used to work with was the poster boy for this. Very nice guy, knew the law, knew his job, but didn't care for shooting, so he didn't. My first real "I don't believe this!" on cops and guns was when he brought his shotgun over for help: they'd qualified about two months before, and there was an inspection coming up, and he could manage to clean his revolver but couldn't remember how to break down the scattergun, and didn't even have a rod for cleaning the bore. So that powder and plastic fouling(lots of buckshot and slugs) had been sitting there solidifying its position for two freakin' months. And would have been there longer if not for the inspection.
See, the cops I was around as I grew up were either country boys or city boys who liked to shoot and/or hunt; they actually practiced on their own when they could, and knew how to take care of their weapons. So when I started meeting those who not only didn't like to shoot, but didn't bother, even though a lot of them were people who were often a looong way from help if things went south... well, it was a shock. And there are a lot more of them than there used to be.