That approach has been replaced by a tactic which takes into account the presence of an active shooter whose interest is to kill, not to take hostages.

The drill was to test the students, staff, and Galt PD reaction if there so happened to be an active shooter on campus.

The commander waved him off, yelling, "We've got active shooters on site.

The definition of active shooter includes so-called "school shootings" and "snipers", but not usually suicide bombers.

Described as "social isolates" who "harbored feelings of hate and anger" active shooters often had some contact with mental health professionals.

Research has determined that aggressive action - by even a single police officer - is the most effective countermeasure in stopping the active shooter.

The agenda of the active shooter is straightforward: harm as many individuals as possible until cornered or captured by law enforcement.

In the majority of cases, active shooters have already decided that they will commit suicide.

Other studies report that the vast majority of active shooters commit suicide soon after police arrive on the scene.

The vast majority of active shooters commit suicide soon after police arrive on the scene.