Edition 2.0. This counterterrorism Job Aid is designed to assist emergency response personnel in identifying a possible terrorist/Weapons of Mass Destruction (WMD) incident and implementing initial actions. It identifies both strategic and tactical considerations that should be assessed within the first hour of an incident, providing clear, step-by-step checklists The Job Aid is designed to assist the first responder from the fire, EMS, Hazmat, CBRNE (Chemical, Biological, Radiological, Nuclear and Explosive) and law enforcement disciplines who has already been trained in emergency response to serve as a quick reference. This includes both line personnel to unit officers and up to and including the initial Incident Commander (IC) (i.e., battalion chief, etc.).