re: #212 Great White Snark

I’m essentially a metallurgist. I have credentials from training in firearms at instructor certification level because I trained for 15 years, and practice ever since.

OK. So metallurgist, and probably a number of other jobs, require you to be a good guy with a gun.

To modify the question a bit: Is there such a thing as a good guy with a gun without a prior justification? In other words, are you really a good guy with a gun if your reasoning is ‘someone in the future might do something?’ Shouldn’t walking around with a gun require something equivalent to probable cause, like people like to steal metals or diamonds?