CLARKSVILLE, TN (CLARKSVILLE NOW) – The Clarksville Police Department is asking for the public’s assistance in locating a runaway juvenile, 17-year-old Britney Duenez. She was last seen on Nov. 10, at around 8 p.m., at her residence on Havendale Court. Duenez 5-foot-4 and weighs approximately 140 pounds with brown eyes and black hair.