Court records reveal new details about one of two teenagers who killed three people at a San Diego mosque. The records show that Caleb Vazquez was flagged to police for idolizing Nazis and mass shooters last year, and that his parents locked away their collection of 26 guns as a precaution under a protective order. Court records and a family statement say Vazquez had a history of mental health issues and was involuntarily hospitalized. His family said they tried to help him, but experts say online radicalization is difficult to combat. Authorities say Vazquez and Cain Clark met online, and that Clark's mother reported guns missing hours before the shooting.