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TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123 (U) JFK ASSASSINATION RECORDS CLASSIFICATION/ DECLASSIFICATION GUIDE NUMBER: 385-00 (U) PUBLICATION DATE: 23 JUNE 2000 (U) PROJECT/ACTIVITY NAME: JFK (President John F. Kennedy) Assassination Records (U) OFFICE OF ORIGIN: DC322 (U) PHONE: (U) CLASSIFICATION/ DECLASSIFICATION AUTHORITY: Director of Policy (U) CLASSIFICATION/DECLASSIFICATION GUIDANCE: Kennedy, (President John F.) Assassination Records Description of Information (U) Records in response to P.L. 102-526 ("President John F. Kennedy Assassination Records Collection Act of 1992") Classification/ Markings Reason - Exemption - Remarks - 1. (U) Intelligence Source Indicator (ISI) SECRET//SI//REL 1.4(c), (d) 20250623 (at a minimum) (U) ISI (often contained in SIGINT product report/ translation serial number) 2. (U) Time of intercept SECRET//SI//REL 1.4(c) 20250623 - 3. (U) Case notations SECRET//SI//REL 1.4(c), (d) 20250623 (at a minimum) - 4. (TS//SI//REL) Individuals' names or TOP SECRET// titles when release would reveal intercept SI//REL of Diplomatic or Leadership communications 1.4(c) (d) 20250623 5. (U) Individuals' names when release would reveal the intercept of specific source of communications SECRET//SI//REL 1.4(c), (d) 20250623 (at a minimum) 6. (U) Work Sheet numbers UNCLASSIFIED 7. (U) Cryptosystem designators SECRET//SI//REL 1.4(c), (d) 20250623 N/A N/A (U) For example, Prime Minister (U) generally appears at top of report/ translation (for example WS 6511) (S//SI//REL) For 1 TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123

TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123 (at a minimum) example, CUIB1 or BLPY 8. (U) Communications lane (foreign FROM/TO entities) SECRET//SI//REL 1.4(c), (d) 20250623 (at a minimum) - 9. (C//SI) Message/Telex numbers assigned by foreign target SECRET//SI//REL 1.4(c), (d) 20250623 (at a minimum) - 10. (U) SIGINT UNCLASSIFIED (COMINT/ELINT/FISINT) targeting/intercept of Cuban Naval, Air, and Ground Military communications/ signals related to the Cuban Missile Crisis from 1 January 1959 through 31 December 1963 N/A N/A (U) This is the time frame established for Cuban Missile Crisis declassification effort. 11. (U) SIGINT (COMINT/ELINT/FISINT) targeting/intercept of communications/ signals of Soviet forces in Cuba (Army, Navy, & Air Force) related to the Cuban Missile Crisis from 1 January 1959 through 31 December 1963 UNCLASSIFIED N/A N/A (U) This is the time frame established for Cuban Missile Crisis declassification effort. 12. (U) SIGINT (COMINT/ELINT/ UNCLASSIFIED FISINT) targeting/intercept of Soviet Forces Cuba (SFC) communications/ signals related to the Cuban Missile Crisis from 1 January 1959 through 31 December 1963 N/A N/A (U) This is the time frame established for Cuban Missile Crisis declassification effort. 13. (U) SIGINT (COMINT/ELINT) UNCLASSIFIED targeting/intercept of Soviet Merchant Shipping communications/signals related to the Cuban Missile Crisis from 1 January 1959 through 31 December 1963 N/A N/A (U) This is the time frame established for Cuban Missile Crisis declassification effort. 14. (U) Fact of SIGINT (COMINT/ UNCLASSIFIED ELINT/FISINT) targeting/intercept of Czechoslovakian communications/signals from 1 January 1960 through 31 December 1962 N/A N/A (U) This is the time frame established for Cuban Missile Crisis declassification effort. This "fact of" is not limited to Cuban Missile Crisis activity. 15. (U) SIGINT (COMINT/ELINT/ FISINT) targeting/intercept of N/A N/A (U) This is the time frame established for UNCLASSIFIED 2 TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123

TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123 Czechoslovakian Air/Air Defense communications/signals from 1 January 1960 through 31 December 1962 Cuban Missile Crisis declassification effort. This targeting/intercept is not limited to Cuban Missile Crisis activity. 16. (U) Source of communications other SECRET//SI//REL 1.4(c), (d) 20250623 than those in items 10, 11, 12, 13, 14,and 15 above - 17. (TS//SI//REL) Fact of COMINT targeting/intercept of Cuban Diplomatic and Agent communications - TOP SECRET//SI// 1.4(c), (d) 20250623 REL 18. (TS//SI//REL) Covernames of Cuban TOP SECRET// Agents SI//REL 1.4(c), (d) 20250623 (TS//SI//REL) For example, SERAFIN 19. (S//SI//REL) COMINT targeting/ intercept of international trade communications (ILC) SECRET//SI//REL 1.4(c), (d) 20250623 20. (U) NSA employees' names unless already publicly known as an NSA employee UNCLASSIFIED// N/A FOUO P.L. 86-36 (C//REL) In some instances names are classified because of prior cover assignments. 21. (U) NSA/SCE reporters' notes indicating missing text CONFIDENTIAL 1.4(g) //REL 20250623 (C//REL) For example: [5M/G] 22. (U) Fact that intercepted communications were encrypted SECRET//SI//REL 1.4(c) 20250623 23. (U) U.S. Collection Source UNCLASSIFIED N/A 24. (S//SI//REL) UK SIGAD SECRET//SI//REL 1.4 (c), (d) 20250623 - 25. (U) SIGADs of closed/deactivated UNCLASSIFIED sites: USA-36, USA-55, USA-66, USA68, USA-70, USA-71, USA-73, USA751,USM-4, USM-47, USM-48, USM-49, USM-84, USM-613, USN-27 & USN-851 from 1 January 1959 through 31 N/A - (U) generally found at bottom left of product report (for example: MS 974) - (S//SI//REL) generally found at bottom left of product report (for example: UKM-262) (U) These SIGADS (assigned to closed sites) may be declassified even though associated with specific SIGINT. 3 TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123

TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123 December 1963 Location corresponding with these SIGADS remain classified. This is the time frame established for Cuban Missile Crisis declassification effort. NOTE 1: (U) Under provision of the JFK Act, information not responsive to the Act is deleted and marked "Not Believed Responsive (NBR)". NOTE 2: (U) A NOFORN supplement to this guide is available in hard copy form. Contact the Office of Information Security Policy to obtain a copy. 4 TOP SECRET//COMINT//REL TO USA, AUS, CAN, GBR, NZL//20291123