The use of explosives against targets poses a significant threat to the security of the public and is a major consideration for law enforcement agencies, who are often the first responders to a bomb threat. All law enforcement responses to bomb threats or emergencies should be conducted systematically, efficiently and in a manner that gives primary consideration to the protection of human life. These documents provide guidance for developing policies and procedures regarding bomb threats and response, to include pre-planning, threat assessment, response, deployment, searches, evacuations, and assistance by specialized units.