Recent decapitations and killings have residents on edge over whether local street gangs are mimicking larger drug trafficking organization violence in the nation's capital. "I think of these groups as cells, as franchises," said Alfredo Castillo, attorney general for Mexico state, the suburban area surrounding Mexico City. "As franchises what do they want? They want the know-how, the business model, and in the end, they want their backing in case of an extraordinary problem."