Active Threat is defined as an individual(s) actively engaged in killing or attempting to kill people in a confined and populated area. Active threat situations are unpredictable, evolve quickly, and may occur in any number of settings to include government facilities, places of business, public and private institutions, streets, open gatherings, etc. Law enforcement, fire and emergency medical services have an aggressive, integrated response plan to ensure optimal victim survivability and reduce loss of life to the greatest extent possible.  If you are ever in an Active Threat situation, Avoid the threat by trying to escape, Deny the threat access by keeping distance between you and the source, and be prepared to Defend yourself if cannot Avoid or Deny.  Be aggressive and committed to your actions.