A local-level association of sex workers utilizes a surveillance team from within a sex brothel to watch for and prevent the trafficking of under-aged girls.  When the surveillance team composed of senior inmates sees a suspicious activity occurring, they try to obtain background information from the under-aged girl.  The surveillance team then notifies the sex workers’ association.  Based on that information, the association sends a trusted person to the girl’s parents’ or relatives’ house and notifies them of the whereabouts of their daughter.