They are said to be ex military so they would not fear their old mates, auhtorites are all part of this in some way or other.
Well most of the cartel members from either organizations aren't afraid to die and welcome it death. They think dieing in battle for their organization or protecting their bosses is the greatest honor for them. They all face the authorities in confrontations but will avoid them if it isn't neccesarry but Los Zetas will go to federal police stations and shoot them up and throw grenades at them. In Cohuila they will seek out the state police to the intent to kill them knowing they might die in the process. I mean they are complete goons even compared to the other cartel members in the other organizations, that's why they are so feared because of the suicidal mentalitity.
Most of them aren't even ex-military, they are bunch of thugs with nothing to lose. The original 30 that were part of Osiel's security were ex-military but only about 4 or 5 were ex-special mexican forces. Most of the originals are either dead or arrested and the original ones are bosses.
