Cnwdi

Some articles on cnwdi:

Classified Information In The United States - Categories That Are Not Classifications - Controls On Atomic-energy Information - SIGMA Categories and Critical Nuclear Weapon Design Information
... Critical Nuclear Weapon Design Information (CNWDI, colloquially pronounced "Sin-Widdy") reveals the theory of operation or design of the components of a nuclear weapon ... Access to CNWDI is supposed to be kept to the minimum number of individuals needed ... it is Top Secret, would be marked (TS//RD-CNWDI) ...
Critical Nuclear Weapon Design Information - Markings
... In addition to other required markings, CNWDI material should be clearly marked, "Critical Nuclear Weapon Design Information-DoD Directive 5210.2 Applies ... Portions of documents that contain CNWDI shall be marked with an (N) or (CNWDI) following the classification of the portion ... For example, TS(RD)(N) or TS(RD)(CNWDI) ...