CFR›Title 18›Chapter I›Part 3a›Subject Group General ContainsSections 3a.1–3a.2CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Sections 3a.1 § 3a.1 Purpose. 3a.2 § 3a.2 Authority. Previous Declassification and Downgrading Declassification and Downgrading Next Security Officers Security Officers