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 MIL-HDBK-1013/1A
4.2.2.4
Security Area Designation. DoD 5200.8-R indicates that different
areas and tasks require different degrees of security interest depending upon
their purpose, nature of the work performed within and information and/or
materials concerned. For similar reasons, different areas within an activity
may have varying degrees of security importance. To address these situations
and to facilitate operations and simplify the security system, a careful
application of restrictions, controls, and protective measures commensurate
with varying degrees or levels of security importance is essential. In some
cases, the entire area of an activity may have a uniform degree of security
importance requiring only one level of restriction and control. In others,
differences in the degree of security importance will require further
segregation of certain security interests.
1)
Designated Areas. Areas are to be designated as either
restricted areas or nonrestricted areas. Restricted areas are established in
writing by a commanding officer within his/her jurisdiction. These areas are
established "pursuant to lawful authority and promulgated pursuant to DoD
Directive 5200.8, dated 25 April 1991. Commanding officers are to publish in
writing and inform the provost marshal of all areas under his/her control
that are designated as vital to or of substantial importance to national
security.
2)
Restricted Areas. Three types of restricted areas are
established in descending order of importance: Level Three, Level Two, and
Level One. All restricted areas should be posted simply as Restricted Areas
so as not to single out or draw attention to the importance or criticality of
an area. While restricted areas often pertain to the safeguarding of
classified information, there are other valid reasons to establish restricted
areas to protect security interests (e.g., mission sensitivity; protection of
certain unclassified chemicals, precious metals, or precious-metal-bearing
articles; conventional arms, ammunition, and explosives; funds; drugs;
nuclear material; sensitive or critical assets; or articles having high
likelihood of theft).
(a) Level Three (Formerly Exclusion Area). Level Three is
the most secure type of restricted area. It may be within a less secure
restricted area. It contains a security interest which if lost, stolen,
compromised, or sabotaged would cause grave damage to the command mission or
national security. Access to the Level Three restricted area constitutes, or
is considered to constitute, actual access to the security interest or asset.
(b) Level Two (Formerly Limited Area). Level Two is the
next most secure type of restricted area. It may be inside a Level One area,
but is never inside a Level Three area. It contains a security interest
which if lost, stolen, compromised, or sabotaged would cause serious damage
to the command mission or national security. Uncontrolled or unescorted
movement could permit access to the security interest.
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