RED October?
https://www.electrospaces.net/2013/09/the-us-classification-system.html
The US Classification System
(Updated: August 12, 2021)
Top level telecommunications often involve information that has to be kept secret. To ensure that, governments have systems to protect sensitive information by classifying it, which is best known from document markings like "Top Secret".
Here we'll explain the classification system of the United States, which is far more complex than most people think, also because it's one of the world's biggest secrecy systems. In 2012 almost 5 million(!) people in the US had a clearance for access to classified information, a number that was brought back to 4,2 million by 2015.
The deeper parts of this classification system are classified, but some new details and codewords have been revealed in documents from the recent Snowden-leaks.
Classification levels
The United States government classifies information according to the degree which the unauthorized disclosure would damage national security. Like many other countries, the US has three classifications levels. From the highest to the lowest level these are:
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TOP SECRET (TS, color code: orange)
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SECRET (S, color code: red)
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CONFIDENTIAL (C, color code: blue)
Government documents that do not have a classification can be marked as:
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UNCLASSIFIED (U, color code: green)
TALENT KEYHOLE (TK)
This control system is for products of overhead collection systems, such as satellites and reconnaissance aircraft, and contains compartments, which are identified by a classified codeword. The original TALENT compartment was created in the mid-1950s for the U-2. In 1960, it was broadened to cover all national aerial reconnaissance and the KEYHOLE compartment was created for satellite intelligence.
Some former TK subcompartments were:
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CHESS, RUFF, DAFF and ZARF
Some current TK compartments are:
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BLUEFISH (BLFH)
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IDITAROD (IDIT)
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KANDIK (KAND)
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GEOCAP (G)
In a classification line this is shown like: TOP SECRET//TK-BLFH
MARVEL (MVL)
This control system is only known by its codeword, its purpose is still classified. MARVEL has four known compartments, each identified by two separate codewords.*
Known compartments are:
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GHOSTLY LABRYNTH (GYL)
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MADAM BUTTERFLY (MBF)
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PAINTED LADY (PDL)
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TAME MONARCH (TMN)
In a classification line this is shown like: TOP SECRET//MVL-MBF
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