See if they are congenital cowards who terrify easily and can't figure out what real jeopardy is so they will shoot first always at anything anyone any time.
Clear thinking, calm, logical, reasonable STABLE.
Too many cops hipshoot to death out of fear of "the other".
I prefer sane people who are mentally STABLE and emotionally healthy don't you?
Give them license to kill/murder and not know for sure they are worthy of that kind of power? Boy. That in itself is a very crackpot thing to do. So why do we keep doing it?