What do we know about California bar shooting suspect?

We're learning more about 28-year-old Ian Long, who's been identified as the gunman behind the mass shooting at the Borderline Bar and Grill in Thousand Oaks, California, that claimed at least 12 lives. CBS News security analyst Paul Viollis joins CBSN with more. Try it free! At launch, the network is available 24/7 and makes all of the resources of CBS News available directly on digital platforms with live, anchored coverage 15 hours each weekday. CBSN. Always On.