20 children dead in Conn. elementary school shooting
Connecticut school shooting
Credit: NBC
Police respond to a shooting at an elementary school in Newtown, Conn., Dec. 14, 2012.
Related:
Conn. officials say principal died lunging at gunman
Idaho police regularly train for school shooting scenarios
Tearful Obama calls for 'meaningful action' after Conn. shooting
Obama speaks to Connecticut governor
Boise, Meridian schools respond to deadly CT school shooting
CT Shooting: Young girl describes classroom lockdown
