I did counter narco in Colombia. I think the thing I got most out of it was that you can't believe what TV says about the Colombian military and police. Sure there are some bad guys, but most seem to really love their country and appreciate all the help they get from America.
Just doing what they do puts a price on their heads from the cartels. It would be really easy for them to use their training and knowledge to help the cartels and make 5x what they make from the gov't, but they come back everyday trying to make a difference for their country and families. God bless those guys.