Columbine and a quarter-century of US school shootings rte.ie - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from rte.ie Daily Mail and Mail on Sunday newspapers.
Before the Columbine High School shooting, schools prepared for fires and natural disasters. After the 1999 massacre, states enacted lockdown and active shooter drills.
Columbine Survivor Moms Still Fearful of Sending Kids to School 25 Years Later hngn.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from hngn.com Daily Mail and Mail on Sunday newspapers.