New documentary explores an unlikely friendship between a man and a manta ray

An unlikely friendship between a Vietnam War veteran and a manta ray is the subject of an award-winning documentary called "The Last Dive." The film will be coming to San Diego on Aug. 19 and Aug. 20. Wednesday on Midday Edition, KPBS' Andrew Bowen sits down with the director to talk about the friendship at the heart of the documentary, and how it explores themes of redemption, ocean conservation…