Officials stand outside Columbine High School after the school was evacuated because of a bomb scare in Littleton

 
Officials stand outside Columbine High School after the school was evacuated because of a bomb scare in Littleton
Officials stand outside Columbine High School after the school was evacuated because of a bomb scare in Littleton, Colorado March 1, 2007. Columbine, the scene of the deadliest school shooting in U.S. history, was evacuated on Thursday after a series of phone calls were received, police said. REUTERS/Rick Giase (UNITED STATES)