My oldest boy is a cop. He volunteered for SWAT duty, because that is where the adrenalin flows. I don't even bother to discuss it with him, any more! He's lost to the dark side!
I understand that the same chemicals are released, by the body, during these situation, as when a hype shoots up... That keeps runners going, and cops kicking down doors/ stopping "suspects" (suspect=you) hmmmmmmmmmmmm...
You raise an interesting idea with regard to the adrenalin rush associated with certain activities within law enforcement.
Just to be clear, I'm a HUGE supporter of the police. I've participated in countless fundraising events, 10K races, motorcycle charity rides, and others. I count several officers among my closest friends and have a pretty cool collection of patches and other hobbyist trinkets. Virtually all of my spouse's relatives are employed in law enforcement.
My concern is that these valuable public servents must also be kept in check as we ENTRUST their power to them, not the other way around. Trotting dogs alongside cars with any regularity represents a slip down the slope, as it were...
~ Blue Jays ~