32 C.F.R. § 2400.27 Storage of classification information.
Title 32 - National Defense
Whenever classified information is not under the personal control and observation of an authorized person, it will be guarded or stored in a locked security container approved for the storage and protection of the appropriate level of classified information as prescribed in §2001.43 of Directive No. 1.
Title 32: National Defense
PART 2400—REGULATIONS TO IMPLEMENT E.O. 12356; OFFICE OF SCIENCE AND TECHNOLOGY POLICY INFORMATION SECURITY PROGRAM
Subpart E—Safeguarding
§ 2400.27 Storage of classification information.