In Shift, Police Advise Taking an Active Role to Counter Mass Attacks
From NY Times, By ERICA GOODE, April 6, 2013 –
The speed and deadliness of recent high-profile shootings have prompted police departments to recommend fleeing, hiding or fighting in the event of a mass attack, instead of remaining passive and waiting for help.
After the Columbine High School shooting in 1999, some police departments began telling officers to act immediately rather than wait for backup.