How the N.S. RCMP failed to adequately warn the public about a gunman

The RCMP in Nova Scotia has been criticized for the way communications were handled during the mass shootings of April 2020. This week, the Mass Casualty Commission looks at how the RCMP failed to adequately warn the public about a loose gunman. CBC reporter Elizabeth McMillan tells host Matt Galloway more; and emergency alert expert Michael Hallowes explains how a better emergency alert system could have saved lives during the shooting.