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There are four main types of security clearances for national security positions. These are confidential, secret, top secret (TS), and sensitive compartmented information (SCI).
Confidential
This type of security clearance provides access to information or material that may cause damage to national security if disclosed without authorization. It must be reinvestigated every 15 years.
Secret
This type of security clearance provides access to information or material that may cause serious damage to national security if disclosed without authorization. It must be reinvestigated every 10 years.
Top Secret
This type of security clearance provides access to information or material that may cause exceptionally grave damage to national security if disclosed without authorization. It must be reinvestigated every five years.
Sensitive Compartmented Information (SCI)
This type of security clearance provides access to all intelligence information and material that require special controls for restricted handling within compartmented channels.”
http://gogovernment.org/how_to_apply/next_steps/security_clearance.php
Oh, and the super dooper “Q” clearance, which grants you special access to the decoder ring...
Yep.. Ive had TS and SECRET clearances at varied times bomber the years. Found it comical that Avenatti referred to his client having multiple clearances.