<Li> SBPR--SSBI Periodic Reinvestigation </Li> <Li> PPR--SSBI Phased Periodic Reinvestigation </Li> <Li> PRS--Periodic Reinvestigation - Secret </Li> <Li> T3 or T3R - Tier 3 or Tier 3 Reinvestigation, now replace all NACLC . </Li>

What is required for a ts sci clearance