Active Shooter Preparednes The Department of Homeland Security defines an active shooter as “an individual actively engaged in killing or attempting to kill people in a confined and populated area.” These incidents usually involve firearms and randomly selected targets or victims. Anyone involved in an incident should call emergency 911 as soon as it is safe to do so. Active shooter events are usually over within 10-15 minutes (sometimes before law enforcement arrives), so know how to respond if the unthinkable happens. Active shooters may be current or former workers, family or friends of co-workers, or complete strangers. While it is difficult...