18 CFR 1301.69: Safeguarding classified information.

(a) All classified information shall be afforded a level of protection against unauthorized disclosure commensurate with its level of classification.

(b) The Executive Order and the Information Security Oversight Office implementing directive provides information on the protection of classified information. Specific controls on the use, processing, storage, reproduction, and transmittal of classified information within TVA to provide protection for such information and to prevent access by unauthorized persons are contained in internal TVA procedures.

(c) Any person who discovers or believes that a classified document is lost or compromised shall immediately report the circumstances to their supervisor and the Senior Agency Official, who shall conduct an immediate inquiry into the matter.