[Stonewall Jackson]

Look at all of the KGB-types who went rogue back in the 1990's and used their knowledge of clandestine operations to become the ruthless leaders of the Russian Mafia. The same can be said for thousands of former Spetznaz who took all of their combat training and went mercenary, selling their skills to the highest bidder.

In Mexico, many of the drug cartels have former police officers and drug enforcement personnel on their payrolls. They use the knowledge these men possess to make their operations all but impossible to dismantle.

[Travis McGee]

Good points. Military or spooks to dangerous criminals is a well-trod path, if one is criminal-minded.