9797, I can sure tell you are in in law enforcement. I wrote long ago that they should be using plain clothes surveillance details and sting operations to help counter threats like this. Some of the old masters of COIN used techniques like this long ago but have been forgotten. It is a different mindset that needs to be transferred to the military. Jedburgh our master Intell man found some RAND reports of old COIN techniques where they even used Husband and Wife plain clothes details to avoid detection. The reports are all online if you get a chance read them, these guys were tough and new how to win.