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https://www.cia.gov/readingroom/docs/CIA-RDP61-00549R000200030003-8.pdf
https://www.intelligence.gov/assets/documents/702-documents/declassified/2025/CIA_QPs_Amended_2024_Cert_D_3-21-25_Redacted_8-19-25_final.pdf
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https://www.cia.gov/readingroom/docs/CIA-RDP80R01720R001100030001-2.pdf
https://www.cia.gov/readingroom/docs/CIA-RDP77-00389R000100030013-9.pdf
https://www.cia.gov/readingroom/docs/CIA-RDP83M00914R002700130005-8.pdf
https://www.archives.gov/files/research/jfk/releases/104-10150-10136.pdf
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https://www.cia.gov/library/abbottabad-compound/B9/B9875E9C2553D81D1D6E0523563F8D72_DoD_Dictionary_of_Military_Terms.pdf
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https://transforming-classification.blogs.archives.gov/wp-content/uploads/sites/10/2024/07/U-6.24.24.-PIDB-Public-Presentation-Cleared-for-Public-Release.pdf