Emergency alerts are issued to specific locations believed to be endangered due to a specific risk. As the RCMP wasn’t able to determine the suspect had left the area of Portapique in a mock-up police cruiser let alone which direct he was headed, where should this alert have been issued?
ETA - Just imagine the pandemonium it would cause - creating fear of all the investigating officers by the general public as well. This is one reason twitter was somewhat appropriate because at least they were able to circulate a photo of the suspect along with a photo of the mockup cruiser including the location of the different serial #.
To respectfully address some of your questions- RCMP could have followed some the current amber alert protocol. I believe its perimeters would be province wide.
Personally, I feel it was negligent to not issue an alert in the form of emergency broadcasts on TV, cell phones, and radio new outlets. I'm sorry if that is a harsh judgement but this is why:
There was a victim who survived, was shot by "someone in a police car" driving away and police had that info while attending the initial scene. He's their living witness who saw the shooter drive away. They discovered the shooter had numerous replica police vehicles registered to him. 7 people were injured or dead, I believe, and multiple fires.....
This already is worthy of an emergency alert. multiple fires, shooters not located, mass shooting. We literally send alerts for teenagers who miss school to hang out with their bf's (certain amber alerts I recall in my area) and I don't disagree with doing this. Because its always better to be safe! Pandemonium was already in progress. Letting people know would have been wise.
If there's red tape about the emergency alert system criteria not being met, then they could have called the local media to give them the tweet info. Think outside the box. Police and media work together all the time to get important info out to the public quickly.
As a former ambulance dispatcher in Ontario, I feel that if this were Ontario the media would have picked it up like a hoover. To not find the shooter at a scene with over 5 dead is a very scary and unusual situation. Obviously rural NS and Toronto are very different creatures. Crazy stuff happening in big cities is more "normal" and easier for us to believe and act quickly on.
Employees in that NS ambulance dispatch centre would have been on the edge of their seats waiting for the news that they found the shooter. Because the crews are in danger until the perpetrator is found. When there's a shooting and the gunman has not been located, EMS won't actually help anyone in medical distress. Until the scene is deemed safe by the police, they can not enter.
LE may have hoped the killer was dead but they didn't have confirmation! To inform the public would have been the difficult but right decision to make. IMO