Saskatoon Police on Twitter: "In addition to ERT, Patrol and CNT, canine is also at the scene of a standoff in 2100 block of 7th St E http://t.co/H27jiq4gJc" / Twitter
![Police officers work at the scene of a school shooting at Dawson College in Montreal September 13, 2006. REUTERS/Shaun Best (CANADA Stock Photo - Alamy Police officers work at the scene of a school shooting at Dawson College in Montreal September 13, 2006. REUTERS/Shaun Best (CANADA Stock Photo - Alamy](https://c8.alamy.com/zooms/6/807dd4429e23440ea4fe97d3dc71cc7a/2d1dcnt.jpg)
Police officers work at the scene of a school shooting at Dawson College in Montreal September 13, 2006. REUTERS/Shaun Best (CANADA Stock Photo - Alamy
![San Francisco Police on Twitter: "(1/2) Earlier today, Crisis Intervention Trained (CIT) and Hostage/Crisis Negotiation Trained Officers saved the life of a suicidal Vietnam veteran threatening to jump off of a 9-story San Francisco Police on Twitter: "(1/2) Earlier today, Crisis Intervention Trained (CIT) and Hostage/Crisis Negotiation Trained Officers saved the life of a suicidal Vietnam veteran threatening to jump off of a 9-story](https://pbs.twimg.com/media/E5VnL6jVcA4tNiL.jpg:large)