Title: JFK Assassination Records Classification/Declassification Guide Number: 385-00

Release Date: 2017-10-25

Document Date: 2000-06-23

Description: This classification guide from 2000 shows that aspects of NSA investigations related to the Kennedy assassination were still classed as top secret, decades later: see the Intercept article NSA Concealed Records on JFK Assassination for Decades, 25 October 2017.

Document: 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 Classification/ Markings Reason Exemption Remarks
(U) Records in response to P.L. 102-526 ("President John F. Kennedy Assassination Records Collection Act of 1992") - - - -
1. (U) Intelligence Source Indicator (ISI) SECRET//SI//REL (at a minimum) 1.4(c), (d) 20250623 (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 (at a minimum) 1.4(c), (d) 20250623 -
4. (TS//SI//REL) Individuals' names or titles when release would reveal intercept of Diplomatic or Leadership communications TOP SECRET// SI//REL 1.4(c) (d) 20250623 (U) For example, Prime Minister
5. (U) Individuals' names when release would reveal the intercept of specific source of communications SECRET//SI//REL (at a minimum) 1.4(c), (d) 20250623 -
6. (U) Work Sheet numbers UNCLASSIFIED N/A N/A (U) generally appears at top of report/ translation (for example WS 6511)
7. (U) Cryptosystem designators SECRET//SI//REL 1.4(c), (d) 20250623 (S//SI//REL) For

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(at a minimum) example, CUIB1 or BLPY
8. (U) Communications lane (foreign FROM/TO entities) SECRET//SI//REL (at a minimum) 1.4(c), (d) 20250623 -
9. (C//SI) Message/Telex numbers assigned by foreign target SECRET//SI//REL (at a minimum) 1.4(c), (d) 20250623 -
10. (U) SIGINT (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 UNCLASSIFIED 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/ FISINT) targeting/intercept of Soviet Forces Cuba (SFC) communications/ signals 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.
13. (U) SIGINT (COMINT/ELINT) targeting/intercept of Soviet Merchant Shipping communications/signals 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.
14. (U) Fact of SIGINT (COMINT/ ELINT/FISINT) targeting/intercept of Czechoslovakian communications/signals from 1 January 1960 through 31 December 1962 UNCLASSIFIED 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 UNCLASSIFIED N/A N/A (U) This is the time frame established for

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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 than those in items 10, 11, 12, 13, 14,and 15 above SECRET//SI//REL 1.4(c), (d) 20250623 -
17. (TS//SI//REL) Fact of COMINT targeting/intercept of Cuban Diplomatic and Agent communications TOP SECRET//SI// REL 1.4(c), (d) 20250623 -
18. (TS//SI//REL) Covernames of Cuban Agents TOP SECRET// 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// FOUO N/A 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 //REL 1.4(g) 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 N/A (U) generally found at bottom left of product report (for example: MS 974)
24. (S//SI//REL) UK SIGAD SECRET//SI//REL 1.4 (c), (d) 20250623 (S//SI//REL) generally found at bottom left of product report (for example: UkM-262)
25. (U) SIGADs of closed/deactivated sites: USA-36, USA-55, USA-66, USA- 68, USA-70, USA-71, USA-73, USA- 751,USM-4, USM-47, USM-48, USM-49, USM-84, USM-613, USN-27 & USN-851 from 1 January 1959 through 31 UNCLASSIFIED - - (U) These SIGADS (assigned to closed sites) may be declassified even though associated with specific SIGINT.

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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.

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