Harris & Klebold arrive at Columbine
Place duffel bags with propane bombs in
Plan is to shoot students who ﬂee after
the explosion during lunch
Brooks Brown sees Harris
Propane bombs do not detonate.
Harris & Klebold moved to the northern-
most part of campus, to work their way
down to the lowest
Victims #1 and #2 on grassy knoll at top
3 students in “smoker’s pit” shot
5 students on grass next to school shot
2 killed at close range outside cafeteria
1 killed on stairs
Overheard by witness: “This is what we always
wanted to do. This is awesome!”
First sheriff’s deputy dispatched
Teacher sees them in hallway, think they’re
ﬁlming a class video; she’s shot at - runs to the
library and calls 911 . . .
Teacher is shot, dragged into a science
classroom (bleeds to death)
Shoot student, shoot out windows at
Harris and Klebold return to cafeteria,
attempting to detonate propane bombs
Return to Library where 52 students, 2
teachers, and 2 librarians are hiding
“Everyone with a white hat or baseball cap
“All the jocks stand up!”
8 killed, 10 injured in library
In 45-minutes of shooting and throwing pipe
bombs, 12 students and one teacher are
killed, and 23 others are injured.
Eric Harris and Dylan Klebold committed
suicide in the library.
In May 2002, the Secret Service published a report that examined 37 U.S. school
shootings. They had the following ﬁndings:
• Incidents of targeted violence at school rarely were sudden, impulsive acts.
• Prior to most incidents, other people knew about the attacker’s idea and/or
plan to attack.
• Most attackers did not threaten their targets directly prior to advancing the
• There is no accurate or useful quot;proﬁlequot; of students who engaged in targeted
• Most attackers engaged in some behavior prior to the incident that caused
others concern or indicated a need for help.
• Most attackers had difﬁculty coping with signiﬁcant losses or personal
failures. Moreover, many had considered or attempted suicide.
• Many attackers felt bullied, persecuted or injured by others prior to the
• Most attackers had access to and had used weapons prior to the attack.
• In many cases, other students were involved in some capacity.
• Despite prompt law enforcement responses, most shooting incidents were
stopped by means other than law enforcement intervention.