What is the scope of Tier 1 federal investigations?

The scope of Tier 1 federal investigations covers a period of 5 years. This tier is designed for positions with low risk to national security, typically involving a more streamlined investigation compared to higher tiers. The 5-year scope allows for a review of significant life events and behaviors that may impact an individual’s suitability for access to sensitive information or facilities. This timeframe is sufficient to assess changes in an individual's background and conduct that could affect their eligibility.

In contrast, shorter timeframes like 1, 2, or even 10 years would not align with the standard guidelines established for Tier 1 investigations, which are specifically calibrated to ensure adequate vetting while maintaining a balance between security requirements and operational efficiency.