(a) Classified information, in all forms, must be marked in a manner that is immediately apparent pursuant to the standards set forth in section 1.6 of Executive Order 13526; 32 CFR part 2001, subpart B; and internal DHS guidance approved and distributed by the Office of the Chief Security Officer.
CFR 6-7.25-2014 history
2014CFR 6-7.25-2014 Domestic security. Part7:Classified national security information. Subpart B:Classified Information. Section7.25:Identification and markings.