Patricia Boal is joined by Chris Lewis, CTV Public Safety Analyst and Former OPP Commissioner, talks about the tragic shooting in Sydney, Australia and how Canadian police forces can respond with a heightened presence following violent attacks like that.

<p>Patricia Boal is joined by Chris Lewis, CTV Public Safety Analyst and Former OPP Commissioner, talks about the tragic shooting in Sydney, Australia and how Canadian police forces can respond with a heightened presence following violent attacks like that.</p>