Guidelines cover procedures for handling classified information, security clearances, area and access control, visitor control, and general security. Security concerns related to subcontractors, vendors, suppliers, consultants, multiple-facility organizations, and overseas operations are delineated. Procedures for safeguarding specialized information deal with graphic arts, sensitive compartmented information, critical nuclear weapon design data, and North Atlantic Treaty Organization information. An additional section sets forth security requirements for automated information systems. Appendixes provide security forms and additional procedures for contractor self-inspections, transport of classified materials, security briefings, and construction. Glossary and index.