There are personality types (probably galore) who can hack violence - even when it is of the cold-blooded kind. I think of three friends over the years (two still with us in the Copper Country) who were Marine snipers in Nam and who seem to have been relatively untouched by the experience. If anything, it seems to have been a positive thing - that from an outside observer who is not into their heads, but just a guy who drank a fair amount of beer with them.
On the other hand, there are personality types (again probably galore) who cannot hack violence. And, a bunch in between. So, it would seem useful to expand on some personality profiles as you guys know them (no need for shrink jargon).
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