Bangor Police are teaming up with the National Center for Missing and Exploited Children to try to find 17-year-old Joanna Serrano. She was last seen on February 18, but her last known location has not been released. Serrano is multi-racial, 5’2″, 130 pounds with brown hair and brown eyes. Bangor police say she is Asian, black, Hispanic, and white. She has been known to wear glasses and has pierced ears. Anyone who knows where she may be is urged to call 9-1-1.