This article / list from Field & Stream is interesting in a whole lot of ways, especially the bluntness and practicality of it. It’s a list of rules for gunfighting. My favorites:
23. Your number one option for personal security is a lifelong commitment to avoidance, deterrence, and de-escalation.
That one, though probably the most useful and applicable in most cases, admittedly gets a bit lost among the other ones that are more towards the practical side once that has failed, like this one:
27. Regardless of whether justified of not, you will feel sad about killing another human being. It is better to be sad than to be room temperature.
A lot more truth than you find in the standard TV cop drama five minutes left until the top of the hour gun fight to wrap things up quickly scene.