Articles about LOCK DOWN

Toronto high school locked down after shooting
Toronto high school locked down during gun incident
Students Recall Being In Lockdown
Parents Shocked & Angry After Shooting
CityNews Rewind: The Day Jordan Manners Was Killed
Lockdown at New Westminster high school leaves pupils 'a little bit scared'
Police lock down North York high school after gunman reports
Teen stabbed outside Scarborough high school
High School Goes Into Lockdown & Fear After Fatal Shooting
Toy gun sparks school lockdown