Workplace Boundaries in a Security Clearance Job

People often wonder what the differences are between working in an office or organization which requires a security clearance and one which does not. For those who have experienced both situations, the answer would probably focus more on the obvious answer which is the security aspect. But what about the personal relationships and atmosphere for co-workers? Is it very different?

To understand what is required for a security clearance and who is eligible, below is a brief explanation of what is involved in the three clearance levels, and the process for becoming a cleared professional:
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Workplace Boundaries in a Security Clearance Job