SSBI-PRs are performed on personnel whose clearance is based on an investigation that is how old or more?

The correct answer is based on the requirement for periodic reinvestigations of personnel holding security clearances. A Single Scope Background Investigation (SSBI) is typically required for individuals holding a top-secret clearance, and the periodic reinvestigation (SSBI-PR) becomes necessary once the initial investigation reaches the five-year mark. This is to ensure that the individual's eligibility for access to classified information remains valid and reflects any changes in their circumstances, behavior, or associated risks.

The five-year requirement for conducting an SSBI-PR is established to maintain national security standards and to continuously assess the trustworthiness and reliability of personnel with access to sensitive information. Regular reinvestigation intervals help agencies manage potential risks associated with personnel security situations that may develop over time.