What does T3R stand for?

T3R stands for Tier 3 Reinvestigation. This term is part of the security clearance process used within the U.S. government and its agencies. A Tier 3 Reinvestigation specifically involves a comprehensive review of individuals who hold security clearances, typically conducted every five years to ensure that there have been no changes in circumstances that could affect an individual's suitability for access to classified information.

In this context, it is essential to maintain up-to-date evaluations of personnel with security clearances, reinforcing the integrity of the personnel security system. This process helps to identify any potential risks that may have developed since the last investigation, ensuring that individuals continue to meet the necessary requirements for their roles.

Understanding the significance of T3R is crucial for grasping broader concepts in personnel security, especially in the context of maintaining national security and protecting sensitive information.