To me the biggest lesson of the article is;
'gunfights are very rare; even for those who have to run towards, what we'd all run from'.
Is a gun and the training that goes with it really the best use of your resources?
It's a struggle to think of any situation where carrying a gun legally is a disadvantage.
But there are plenty of times (and they are the ones that are probably going to happen) where "I wish I'd spent that time on a first aid course instead of the range" or; "I wish I'd spent that money on a GPS or satellite phone, rather than at the gunshop", might be going through your mind.
Given that time and money are limited; preparing for the unlikely, at the expense of the likely, is a recipe for disaster.
qjs