This Independent Study (IS) is available through the Federal Emergency Management Agency's Emergency Management Institute. "An active shooter is an individual actively engaged in killing or attempting to kill people in a confined and other populated area. In most cases, active shooters use firearms and there is no pattern or method to their selection of victims. Active shooter situations are unpredictable and evolve quickly. All employees can help prevent and prepare for potential active shooter situations. This course provides guidance to individuals, including managers and employees, so that they can prepare to respond to an active shooter situation. This course is not written for law enforcement officers, but for non-law enforcement employees. The material may provide law enforcement officers information on recommended actions for non-law enforcement employees to take should they be confronted with an active shooter situation."
FEMA Independent Study Program: http://training.fema.gov/EMIWeb/IS/