CFR›Title 12›Chapter I›Part 21›Subpart A ContainsSections 21.1–21.4CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart A—Minimum Security Devices and Procedures Sections 21.1 § 21.1 Purpose and scope of subpart A of this part. 21.2 § 21.2 Designation of security officer. 21.3 § 21.3 Security program. 21.4 § 21.4 Report. Source56 FR 29564, June 28, 1991, unless otherwise noted. Next B Subpart B—Reports of Suspicious Activities