To be eligible for Sensitive Compartmented Information (SCI) clearance, you must:
Be nominated for an SCI billet
Pass a Single Scope Background Investigation (SSBI)
Be approved by the appropriate government agency
SCI includes several categories of compartmented information. Central Adjudication Facilities (CAFs) grant you eligibility for access to SCI. Once your eligibility has been established, you can be granted special access authorization for a specific category of information within SCI.
SCI access eligibility is divided into three sensitivity levels, with each requiring you to undergo different types of investigations, including:
SSBI without polygraph
SSBI with Counterintelligence Scope polygraph
SSBI with Full Scope polygraph