General Discussion

For at least 20 years.
The trainers all called themselves "ex-military" as if it was some sort of justification. Most of them were probably encouraged not to reenlist or went the mercenary route.
In the military, the counter insurgency training for active/in country soldiers midway through Shrub II's Iraq adventure was provided mercenary groups - Blackwater, mainly - because Rumsfeld thought we were moving too cautiously due to the UCMJ, so a lot of soldiers were exposed to the "kill them all and let Gawd sort them out" attitude that did nothing to help the mission or pacify the local populations to reduce attacks on the troops.
It really screwed with a lot of young men's minds.