Given that a lot of the reactions that vets have that could be troublesome could be related to PTSD or other (currently) incurable psychiatric conditions, there isn't much that can be done. So many of the reactions that have been brought about through training are further reinforced through real life and death situations.
Yes, intellectually I know I'm not in a war anymore but for the handful of seconds that follow a given triggering event, you'd have a hard time trying to convince me otherwise. A triggering event could be as innocent as seeing trash on the side of the road to seeing a child with bloody knees at a park crying in his mother's arms after a fall to the sulfur smell of fireworks thrown by kids. For me, a cart that I push around every once in a while at work sounds just like the track pads of my Bradley Fighting Vehicle hitting the pavement when I was on patrol and it'll put me on edge all day. Then there are the triggers that you hallucinate. How do you not react to something that you are absolutely convinced is there?
Yes, I too am troubled by the militarization of our police forces, but I'm not sure how much of that is due to the fact that a portion of our police forces have served in combat. I'm not going to get into that conversation now, but I found a lot of interesting reads when I googled "militarization of police" that points to other reasons.
I'm sorry if it seems like I'm snapping at you in any way, but as a veteran with a moderately-severe case of PTSD and who has been going to therapy off and on for years your last line really caught my attention.