MSNBC Live with Tamron Hall 12/09/15

FBI: San Bernardino attackers were radicalized before they met

FBI Director James Comey says the couple responsible for the San Bernardino shooting was radicalized before they met online. Plus, a senior law enforcement official says Syed Farook may have talked about staging an attack three years ago. NBC News Justice Correspondent Pete Williams reports. ... more Duration: {{video.duration.momentjs}}