>> what these officers find routine is considered progressive by law enforcement standards. >> we take it very seriously. we've been working with the fbi for years. the exploitation of girls underage on the internet is also a federal offense. >> with help from a federal human trafficking grant the oakland p.d. along with the fbi regularly conducts sting operations. >> again, the mission is to rescue any underage prostitute from being exploited and identify and arrest their pimp. an officer will make a deal for a sexual act in exchange for u.s. currency and the targeted individuals will be taken into custody in a room. >> their objective, to rescue young girls in trouble. a male officer plays the human decoy. he will call young girls from online ads and ask them to meet him at this hotel. snow there's certain girls that we've already focused in on.