12968 A person classified as entitled to or having access to classified information is subject to continuous assessment standards For more information, see the Annual Security Clearance Awareness Briefing or contact the Personnel and Security Department. All clearance holders must verify the following documents and sign an SF-312 before obtaining a security clearance. Once you have checked the SF-312 Classified Information Nondisclosure Briefing, the Briefing Booklet and the Safety Supplement Briefing Material Handout (all below). Check and sign the SF-312 (v.2013). SF-312 is a legally binding document between the signatory and the U.S. government, which outlines the release holder`s obligations to protect classified information and to refrain from unauthorized use or disclosure. .