Here is some pertinent information provide by the FBI on active threat response.

• 70% of active shootings happen in a place of commerce or educational setting
• Vast majority of incidents are over in 15 minutes or less
• There has been a  three fold increase in the number of active shootings per year since 2007. 
• No current profile exists for an active shooter
• Vast majority of shooters are lone males
• Many shooters have no past criminal activity
• Some shooters do not have a direct connection between their victims and the shooting location
• Concerning behaviors involving the shooter are observed in many cases prior to the event by friends, family, associates, etc.
• Pre-Attack indicators identified by the FBI include:

1. Development of a personal grievance
2. Contextually inappropriate and recent acquisition of multiple weapons
3. Contextually inappropriate and recent escalation in target practice and weapons training
4. Contextually inappropriate and recent interest in explosives
5. Contextually inappropriate and intense interest or fascination with previous shootings or mass attacks
6. Experience of a significant real or perceived personal loss in the weeks and/or months leading up to the attack, such as a death, breakup, divorce or loss of a job  

Click on the link below for additional information on Active Shooter or Active Threat Situations

Active Shooter Pamphlet

Active Shooter Poster

Active Shooter Video - Warning: The initial sequence in this video may be disturbing.

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