and know how to properly maintain and handle a specific type of firearm.
You'd either need a really comprehensive course, or multiple certifications.
Beyond that, you can look at a place like California for the answer to the question "Does mandatory "safety" training have a measurable impact?". For handguns both a handgun safety certificate is required along with a safe handling demonstration at time of purchase in California. The answer is no.
Coincidetally and anecdotally, this
happened in California, and I'm pretty sure police receive safety training.
unfortunately happened in my town. Multiple of the 4 rules being broken, leading to an negligent discharge that could have hurt/killed the suspect, or a fellow officer.
It is good to see that you're engaging in multiple discussion about these topics based on your posts as of late. I know very few fence sitters, my friends are all either on board with 2A issues, or have closed their minds to any discussion of such.