Counterinsurgency against domestic criminals
It is not surprising that it is being used since many of the counterinsurgency tactics come from police work. Flooding the zone and making it impossible for dope dealers to sell on the streets is one example. The same principals of having an adequate force to space ratio and developing a report with people who live in the neighborhood makes it for difficult for the gang to move to contact without being discovered. Adding drones would add some persistence to the neighborhood over watch effort.
Two state troopers who were deployed in Iraq are using their counterinsurgency training for a program to combat drug and gang violence in Springfield, Mass.