Andrea Mitchell Reports 12/07/15

Investigating the background of Tashfeen Malik

Friends of San Bernardino shooter Tashfeen Malik insist that she was not radicalized in Pakistan, where she grew up. While the source of her radicalization is unclear, there are some details of her background and upbringing that have been confirmed. NBC’s Bill Neely outlines the latest available information. ... more Duration: {{video.duration.momentjs}}