KNX In Depth's Charles Feldman and Rob Archer discuss the long wait from law enforcement in notifying the public of a shooter on the loose in Monterey Park. And do we need an active shooter alert system? 

Chris Grollnek is an expert on active-shooter tactics. He's a retired police officer and SWAT team member in Texas.  

<p>KNX In Depth's Charles Feldman and Rob Archer discuss the long wait from law enforcement in notifying the public of a shooter on the loose in Monterey Park. And do we need an active shooter alert system? </p>
<p>Chris Grollnek is an expert on active-shooter tactics. He's a retired police officer and SWAT team member in Texas.  </p>

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