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Within the U.S. government, security clearance levels serve as a mechanism to ascertain which individuals are authorized to access sensitive or classified information. These levels often appear in employment postings for Defense related jobs and other jobs involving substantial amounts of responsibility, such as air traffic control or nuclear ...
A Single Scope Background Investigation (SSBI), now called a Tier 5 (T5) [1] investigation, is a type of United States security clearance investigation. [2] It involves investigators or agents interviewing past employers, coworkers and other individuals associated with the subject of the SSBI.
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.
Eligibility for access to SCI is determined by a Single Scope Background Investigation (SSBI) or periodic reinvestigation. [4] Because the same investigation is used to grant Top Secret security clearances, the two are often written together as TS//SCI. Eligibility alone does not confer access to any specific SCI material; it is simply a ...
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.
Obtaining such clearance requires, in part, a Single Scope Background Investigation (SSBI) which is conducted under the manuals of the U.S. Defense Counterintelligence and Security Agency. Individuals with Yankee White clearance undergo extensive background investigation.
A person is granted access to a specific compartment after the individual has: (a) had a Single Scope Background Investigation similar to that required for a collateral Top Secret clearance; (b) been "read into" or briefed on the nature and sensitivity of the compartment; and (c) signed a non-disclosure agreement (NDA).
A Q Clearance is equivalent to a U.S. Department of Defense Top Secret clearance. [2] According to the Department of Energy, "Q access authorization corresponds to the background investigation and administrative determination similar to what is completed by other agencies for a Top Secret National Security Information access clearance." [2]