Active Shooter: Shooter’s Affiliation with School

The collection of “active shooter” graphs are based on the following  definition for an active shooter from the Federal Bureau of Investigation (FBI):

One or more individuals actively engaged in killing or attempting to kill people in a populated area. Implicit in this definition is the shooter’s use of one or more firearms. The active aspect of the definition inherently implies that both law enforcement personnel and citizens have the potential to affect the outcome of the event based upon their responses to the situation.