Topics considered include levels of physical security, the psychology of maximum security, the value of planning, and the security plan. Physical barriers that can help achieve maximum security are described, such as doors, roofs, floors, fences, walls, and moats, and topography. A description of locking devices covers padlocks, indoor locks, panic hardware, electromechanical locking systems, and key control. Additional chapters examine advanced alarm systems, the use of light to enhance physical security, communications (audible and visual), closed-circuit television, and access controls. Basic qualifications, screening, training, testing and documentation, appearance, and maintaining morale for security officers are reviewed. The authors describe the qualifications, screening, training, and equipment of a security response force. Additional chapters look at management and supervision, planning, coordination with local law enforcement authorities, security in transit, and protection of proprietary information. Particular reference is made to Nuclear Regulatory Commission security requirements throughout the test. Tables, figures, an index, chapter notes, appendixes, and over 50 references are provided.