Homeland Security: the concept, the organization -- Historic overview of the terrorist threat -- Hazards -- Governmental Homeland Security structures -- Intelligence and counterterrorism -- Border security, immigration, and customs enforcement -- Transportation safety and security -- Cybersecurity and critical infrastructure protection -- All-hazards emergency response and recovery -- Mitigation, prevention, and preparedness -- Communications -- Science and technology -- The future of Homeland Security. "Homeland Security: The Essentials sets a new standard for security textbooks, concisely outlining the risks facing the U.S. today and the structures we have put in place to deal with them. The authors expertly delineate the bedrock principles of preparing for, mitigating, managing, and recovering from emergencies and disasters. From cyber warfare to devastating tornadoes to car bombs, all hazards currently fall within the purview of the Department of Homeland Security. Yet the federal role must be closely aligned with the work of partners in the private sector, and the authors examine the challenges involved in these collaborative efforts."--[book cover].