Progressives need to stop assuming that police officers are all-knowing wizards when it comes to firearms. I have almost two decades of professional law enforcement experience. All of the men and women I served with were proficient at shooting their issued firearms and knew basic gun safety. However, many of these officers knew almost nothing about any firearm other than their issued sidearm, shotgun and rifle.
A competent, professional armorer will have vastly more knowledge about firearms than the average police officer. A department Armorer or Rangemaster will have extensive knowledge about duty weapons, but may have no experience with antique single-action revolvers or high-end exotic European boutique guns.
I have actually been quite impressed by the firearms training programs at many mid-size police departments. Large departments often have too many recruits for instructors to provide sufficient individual instruction or observation. Smaller departments often lack the budget, facilities, and personnel to provide quality training. Assuming all officers are "experts" in firearms, regardless of their training background, is ridiculous.
Sorry for the rant, but I hate when wealthy elites screw-up, and then demand some governmental agency fix the problem. Tragedies can be avoided simply by observing Col. Cooper's 4 Rules, with no need for any type of police or government involvement.