This workshop provides basic definitions and recommendations on what school staff can do to prepare for an Active Shooter, suspicious devices, and other major incidents in school settings. Directions on typical lockdown procedures and actions that should not be allowed such as giving students a restroom pass or teachers walking the halls between classes are discussed. What can you expect as law enforcement and other first responders arrive at the scene? What and how should you communicate with law enforcement? A timeline and description of what to expect in the aftermath is discussed.