C7.2.1. Envelopes or Containers
C126.96.36.199. When classified information is transmitted, it
shall be enclosed in two opaque, sealed envelopes, wrappings, or
containers, durable enough to properly protect the material from
accidental exposure and facilitate detection of tampering. The following
C188.8.131.52.1. If the classified material is an internal
component of a packagable item of equipment, the outside shell or body
may be considered as the inner enclosure provided it does not reveal
C184.108.40.206.2. If the classified material is an inaccessible
internal component of a bulky item of equipment, the outside or body of
the item may be considered to be a sufficient enclosure provided
observation of it does not reveal classified information.
C220.127.116.11.3. If the classified material is an item or
equipment that is not reasonably packagable and the shell or body is
classified, it shall be concealed with an opaque covering that will hide
all classified features.
C18.104.22.168.4. Specialized shipping containers, including
closed cargo transporters, may be considered the outer wrapping or cover
C22.214.171.124.5. When classified material is hand-carried
outside an activity, a locked briefcase may serve as the outer wrapper.
In such cases, the addressing requirements of subparagraph C126.96.36.199.,
below, do not apply.
C188.8.131.52.6. NATO Restricted material need not be
double-wrapped when transmitted within the United States. The marking
"NATO Restricted" shall not appear on the wrapper.
C184.108.40.206. Classified material shall be prepared for
shipment, packaged, and sealed in ways that minimize risk of accidental
exposure or undetected deliberate compromise. Documents should be packaged
so that classified text is not in direct contact with the inner envelope