on one hand I respect cops because there chance of being in harms way is a hell of a lot higher than mine working in commercial real estate.
On the other hand, do they have to undergo psychological evaluations prior to joining the force? Perhaps whatever makes them willing to put their life on the line is the same type of thing that people who go around looking for fights have. Do they have measures for determining if someone can keep their cool rather than abusing the power that is given to them? I feel like these are things that could possibly be determined through psycho analysis.