AdvertisementFallen Officer Made 'Ultimate Sacrifice' In Confronting Thousand Oaks ShooterNovember 08, 2018Colin DwyerfacebookEmailVentura County Sheriff's Sgt. Ron Helus, a 29-year veteran, was killed during the deadly shooting at Borderline Bar and Grill in Thousand Oaks, Calif. (Ventura County Sheriff's Department via AP)