Former NYPD officer on investigation into Gilroy Garlic Festival shooting
At least three people are dead and 15 wounded after a gunman opened fire Sunday night at the Gilroy Garlic Festival in California. CBS News' Katherine Johnson reports on the latest, and Bill Stanton, a retired NYPD officer and author of "Prepared Not Scared: Your Go-To Guide for Staying Safe in an Unsafe World," joins CBSN to discuss the investigation.