I'd be willing to bet it's those out-of-place, normal, civilian city-life mindsets are what prompts many to enlist in the Canadian forces in the first place.  It's a lot more than just "sometimes."  Same with police personnel.  Maybe even Fire-Department and ambulance personnel, too.  

I've ridden with Ambulance medics.  "Mind-set" doesn't even cover it.  
Whew.  Glad they are what and who they are.