U.S. Code of Federal Regulations

Regulations most recently checked for updates: Mar 27, 2023

All TitlesTitle 18Chapter IPart 3a - NATIONAL SECURITY INFORMATION

GENERAL
§ 3a.1 - Purpose.
§ 3a.2 - Authority.

CLASSIFICATION
§ 3a.11 - Classification of official information.
§ 3a.12 - Authority to classify official information.
§ 3a.13 - Classification responsibility and procedure.

DECLASSIFICATION AND DOWNGRADING
§ 3a.21 - Authority to downgrade and declassify.
§ 3a.22 - Declassification and downgrading.
§ 3a.23 - Review of classified material for declassification purposes.

CLASSIFICATION MARKINGS AND SPECIAL NOTATIONS
§ 3a.31 - Classification markings and special notations.

ACCESS TO CLASSIFIED MATERIALS
§ 3a.41 - Access requirements.

SECURITY OFFICERS
§ 3a.51 - Designation of security officers.

STORAGE AND CUSTODY OF CLASSIFIED INFORMATION
§ 3a.61 - Storage and custody of classified information.

ACCOUNTABILITY FOR CLASSIFIED MATERIAL
§ 3a.71 - Accountability for classified material.

TRANSMITTAL OF CLASSIFIED MATERIAL
§ 3a.81 - Transmittal of classified material.

DATA INDEX SYSTEM
§ 3a.91 - Data index system.
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