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A United States security clearance is an official determination that an individual may access information classified by the United States Government.Security clearances are hierarchical; each level grants the holder access to information in that level and the levels below it.
Security clearances can be issued by many United States of America government agencies, including the Department of Defense (DoD), the Department of State (DOS), the Department of Homeland Security (DHS), the Department of Energy (DoE), the Department of Justice (DoJ), the National Security Agency (NSA), and the Central Intelligence Agency (CIA).
A United States security clearance is an official determination that an individual may access information classified by the United States Government. Security clearances are hierarchical; each level grants the holder access to information in that level and the levels below it.
Visa requirements for United States citizens are administrative entry restrictions by the authorities of other states that are imposed on citizens of the United States. As of 2025, holders of a United States passport may travel to 186 countries and territories without a travel visa , or with a visa on arrival .
Visa requirements for South African citizens are administrative entry restrictions by the authorities of other states placed on citizens of the Republic of South Africa. As of 2024, South African citizens had visa-free or visa on arrival access to 106 countries and territories, ranking the South African passport 47th in the world according to ...
The SF 86. Standard Form 86 (SF 86) is a U.S. government questionnaire that individuals complete in order for the government to collect information for "conducting background investigations, reinvestigations, and continuous evaluations of persons under consideration for, or retention of, national security positions."
The United States Postal Inspection Service (USPIS), or the Postal Inspectors, is the federal law enforcement arm of the United States Postal Service.It supports and protects the U.S. Postal Service, its employees, infrastructure, and customers by enforcing the laws that defend the United States' mail system from illegal or dangerous use.
DOD 5220.22-M, National Industrial Security Program Operating Manual (NISPOM), 28 February, 2006; DODD 5200.1-R, Information Security Program, January 1997; EO 13526, Classified National Security Information, 29 December 2009; Intelligence Community Authorized Classification and Control Markings, Register and Manual, vol. 5, no. 1, (2012)