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Often, the mere confrontation with an armed response takes them out of their revenge fantasy and derails the killing spree.
Some examples:
1997, Pearl, Mississippi: A 16-year old boy stabs his mother to death, then goes to the local high school to continue his rampage with a rifle. An assistant principal hears the gunshots, retrieves a pistol from his truck, and confronts the assailant. The boy surrenders.
1998, Edinboro, Pennsylvania: A 14-year old boy opens fire at a high school graduation dance being held at a local restaurant. The restaurant owner confronts the boy with his shotgun, who surrenders.
2002, Appalachian Law School: Two law students with law enforcement and military backgrounds run to their cars, grab handguns, and stop an expelled law student on a rampage.
2005, Tyler, Texas: A distraught man ambushes his estranged wife and son as they are entering the courthouse for a child support hearing. After killing his wife and wounding several deputies, armed citizen Mark Wilson intervenes with his handgun and shoots the spree shooter. The shooter is wearing a flak jacket and kills Wilson with return fire. Wilson’s actions broke up the attack and gave law enforcement officers time to organize a response that ended with the shooter’s death. Wilson is later honored by the Texas legislature.
2005, Tacoma Mall: A spree shooter with a criminal record and five days’ worth of meth in his system opens fire at the Tacoma Mall. Concealed carry permit holder Dan McKown intervenes, but gives a verbal warning instead of shooting. McKown is shot and receives a spinal injury that leaves him paralyzed, but the shooter retreated into a store and took some hostages after being confronted. After complaining about life’s travails to his hostages for several hours, he is taken into custody and sentenced to 163 years in prison.
2007, New Life Church, Colorado: Volunteer security guard Jeanne Assam shoots a spree shooter as he enters the foyer of a church. The spree shooter’s blaze of glory is over, so he shoots and kills himself.
2008, Israel: A Palestinian man goes on a killing spree in the library of a seminary. Police officers stop at the door and do not go in after him. Student Yitzhak Dadon draws his gun and engages the shooter, wounding him. Part-time student and Israeli Army officer David Shapira blows past the cops, demanding a hat to identify him as a police officer and not the assailant, before entering the building and killing the spree shooter.
2009, Houston, Texas: Distraught woman enters her father’s workplace and shoots one man with a bow and arrow. She points a pellet gun at two employees, both concealed handgun permit holders, who shoot her. Police show up and she points the pellet gun at them. They shoot her again and take her into custody.