The National Security Classification System. Open PDF Document Details Document Type Technical Report Publication Date Dec 01, 1977 Accession Number ADA051506 Entities People Richard L. Oborn Organizations Air Force Institute of Technology Tags Communities of Interest Cyber Energy and Power Technologies Ground and Sea Platforms Human Systems Space DTIC Thesaurus Topics Agreements Classified Materials Congress Department Of State Employment Foreign Policy Foreign Relations Government (Foreign) Intergovernmental Organizations International Organizations International Relations Law National Politics National Security Personnel Management Second World War Treaties