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Rod's US Military Blog

By Rod Powers, About.com Guide to US Military since 1999

Security Clearance Secrets

Monday August 25, 2008
Personnel Security Investigations (PSIs) and security clearances are key elements in protecting the security of the United States. What is a security clearance? What do they look at? What can keep you from getting a security clearance? How far back to they investigate? How long is a security clearance valid? This article answers those questions, and more.

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