4
DOCID: 4137487 .,,;, •·' CATEGORY = 16 MESSAGE = 8834Z89l / ,, SESRET SPBKE I <' (b) (3) -P.L. 86-36 M ::: 199 HAH NRL SDA DED ·. FM . · TO · SCAR S X/GOlF ·. ZEM S E e R E T SAYIH SECTION ONE OF SIX XXMM ' L PRELIMINARY REPORT INFORMATION CONTAINED HEREIN REPRESENTS PRELIMINARY ANALYSISOF SIGINT AVAILABLE TO USJ-794FOR 25, 29, 38AND 31 MAY 1967.SECTION ONE - SUMMARY OF AIR DEFENSE AND TACTICAl AIR ACTIVITY.ON 25 MESSAGE BETWEEN THO UNIDENTIFIED TERMINALS REVEAL-ED THAT AT 87SPZ, THIS DATE,THE PORT OF NAM DINH HAD BEEN BOMBEDBY A NUMBER OF UNIDENTIFIED AIRCRAFT. THIS ACTION RESULTED INTHE WOUNDING OF PORT INHABITANTS,THE DAMAGING OF THREE BOATS ANDTHE SINKING OF TWO.ON 3JfMAY,DRV CrtfUlTICHANNEL COMMUNICATIONS FOR THE SECOND CON-SECUTIVE DAY REFLECTED SOVIET TECliNICIAN/OPERATORS LAUNCH ACTIVITY AT A DRV SURFACE-TO-AIR MISSILE (SAM>BATTALION.THE SOVIETS ON BOTH OCCASIONS PARTICIPATED IN THELAUNCH ACTIVITY ·AS OPERAT'CJRS lVICE THEIR NORMAL ADVISORY ltAPACIYYSEE SECTION THREE,PART ALPHA,· . ITEM ONE>.HIGHLIGHTING ACTIVITY FOk- 31 MAY HERE•l. THE DEFENSIVE PATROLS PERFORMED BY MIGS, STAGING FROM THO DRVAIRFIELDS, IN REACTION TO U .. AIR FORCE A.M.AND P.M.STRIKE AIR-CRAFT. AL THOUGH AN ENGAGEMENT OCCURRED, THERE HAS HO RESUL TIHGDAMAGE/lOSS TO EITHER U .. OR DRV AIRCRAFT CSEE SECTION THOJ .2. THE ORV REFLECTIONS OF THE LAUNCHING OF A MINIMUMOF FOUR, POSSIBLY SIX, SAMS BY THO, POSSIBLY THREE, SAM BATTALIONS.THERE HERE ND LOSSES OF US. AIRCRAFT TO SAMS ON THIS DATE1 HOH-EVER,-. HAS LOST TQ AAA <SEE sectfoN THREE, PART ALPHA, ITEMSTHO THRU FIVE). A MINIMUM OF 34 MIG SORTIES HERE FLOWN AND ACTIVITY, OTHER THANREPORTED ABOVE, CONSISTED OF PRACTICE GCI, NAVIGATIOHAL · ANDOTHER UNIDENTIFIABLE TYPE JRAINING 12ACTIVE SAM BATTALIONS 1 H_HILE ELI N ·· _T · -k.IERE O:lAlHED: : SIGINT REFLECTED 28ACTIVE RADAR .. · 1 asFn . · REFLECTED NINE ACTIVE NAVL RADAR STATIONSTRACKING ONE AIRCRAFT ANiJ 148 VESSELS.SECTION THO - FIGHTER ACTIVITYPART ALPHA DURING THE sass llOUR, A USAF '-· ----· STRIKE FORCE OF 39 F-185'S F-4C'S, HERE TARGETED AGAINST THE KEP ARMY BARRACKS CCS39.'f3>FOUR HANQl GIA LAM-BASED MIG-17' AUD fOUR KEP-ASEDMIG-17'S , PERFORMED DEFENSIVE PATROLS IN REACTION TO THIS STRIKEFORCE. ORV ASF INITIALLY REFLECTED THE STRIKE S825Z, OVERTHE GULF SOUTHEAST OF -HAIPHOHG. TRACKED IN THREERAIDS, AMPLIFIED AS TENTO THEHTY-FIVE HOSTILE AIRCRAFT, THESTRIKE FORCE / HEADED NURTH, TtlE LEAD FLIGHT PENETRATED DRVAIRSPACE AT 8835Z, 48NMS EAST OF HAIPHONG.· THIS FLIGHT CONTINUEDNORTH 23MS, THEN TURHED WEST AND HEADED KEP,HHERETRACKING CEASED AT 9852.THE SECOND FLIGHT PENETRATED DRV AIRSPACEAT S842Z, 22NMS EAST OF HAIPHOUG, FLEJ.-1 GENERALL .. Y NORTH TO 8HMSEAST OF KEP HA AT S844, THEN TURNED AND HEADED DIRECTL KEP,HHERE TRACKING CEASED AT S85lf.THE THIRD FLIGHTPEtlETRATED ORV AIRSPACE AT S846, 13MS SOUTHEAST OF Y HAIPHOt:lG,HEADED GENERALL'Y NORTH AND, AT S849Z, 16MS -EAST OF KEP HA, THEFLIGflT TURNED· WEST AND DIRECTLY FOR KEP. THIS FLIGHT SEeR:ET SP6KE ., (b) ( 1) v " (b) (3)-50 USC 4 03 (b) (3)-18 USC 798 (b) (3)-P.L. 86-36 _ _____a;,:__ ·· ----'---- . -- _:._. @'pproved for release by NSA on 05-14-2014, Transparency Case# 65888 · -- · ------ ·· ·- _ . .... ""' . - ·· "' w l . ' .. lJ a '. ' \,71. (,J '1 " "1 _ .. "'J

DOCID: 4137487 - National Security Agency€¦ · docid: 4137487 • . / " se6ret spske hastracked over kep at 8853, circled,then has dropped at 8858,0n it's egress • 14nms southeast

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Page 1: DOCID: 4137487 - National Security Agency€¦ · docid: 4137487 • . / " se6ret spske hastracked over kep at 8853, circled,then has dropped at 8858,0n it's egress • 14nms southeast

DOCID: 4137487

.,,;, •·'

CATEGORY = 16

MESSAGE = 8834Z89l

/ ,,

SESRET SPBKE I

< ' (b) (3) -P.L. 86-36 M ::: 199

r;;r~::·::::~::•mtzco••Z ••~r3' HAH NRL SDA DED

·. i1~745Z Z~H FM USJ~794 . ·

TO · SCAR S X/GOlF ·. ZEM S E e R E T SAYIH SECTION ONE OF SIX

XXMM ' L

~~~gl-Z3185t 2~·86Z-CK~/RU4-67 PRELIMINARY A-~~ ~CTIVITY REPORT

INFORMATION CONTAINED HEREIN REPRESENTS PRELIMINARY ANALYSISOF SIGINT AVAILABLE TO USJ-794FOR 25, 29, 38AND 31 MAY 1967.SECTION ONE - SUMMARY OF AIR DEFENSE AND TACTICAl AIR ACTIVITY.ON 25 MA~,A MESSAGE BETWEEN THO UNIDENTIFIED TERMINALS REVEAL-ED THAT AT 87SPZ, THIS DATE,THE PORT OF NAM DINH HAD BEEN BOMBEDBY A NUMBER OF UNIDENTIFIED AIRCRAFT. THIS ACTION RESULTED INTHE WOUNDING OF PORT INHABITANTS,THE DAMAGING OF THREE BOATS ANDTHE SINKING OF TWO.ON 3JfMAY,DRV CrtfUlTICHANNEL COMMUNICATIONS FOR THE SECOND CON-SECUTIVE DAY REFLECTED SOVIET TECliNICIAN/OPERATORS EHGAGINOI~ A.CTl~AL LAUNCH ACTIVITY AT A DRV SURFACE-TO-AIR MISSILE (SAM>BATTALION.THE SOVIETS ON BOTH OCCASIONS PARTICIPATED IN THELAUNCH ACTIVITY ·AS OPERAT'CJRS lVICE THEIR NORMAL ADVISORY

ltAPACIYYSEE SECTION THREE,PART ALPHA,· .ITEM ONE>.HIGHLIGHTING ACTIVITY FOk- 31 MAY HERE•l. THE DEFENSIVE PATROLS PERFORMED BY MIGS, STAGING FROM THO DRVAIRFIELDS, IN REACTION TO U .. AIR FORCE A.M.AND P.M.STRIKE AIR-CRAFT. AL THOUGH AN ENGAGEMENT OCCURRED, THERE HAS HO RESUL TIHGDAMAGE/lOSS TO EITHER U .. OR DRV AIRCRAFT CSEE SECTION THOJ .2. THE ORV [MU.LTlCHANt~EL REFLECTIONS OF THE LAUNCHING OF A MINIMUMOF FOUR, POSSIBLY SIX, SAMS BY THO, POSSIBLY THREE, SAM BATTALIONS.THERE HERE ND LOSSES OF US. AIRCRAFT TO SAMS ON THIS DATE1 HOH-EVER,-. ._~N-.A4 HAS LOST TQ AAA <SEE sectfoN THREE, PART ALPHA, ITEMSTHO THRU FIVE). A MINIMUM OF 34 MIG SORTIES HERE FLOWN AND ACTIVITY, OTHER THANREPORTED ABOVE, CONSISTED OF PRACTICE GCI, NAVIGATIOHAL · ANDOTHER UNIDENTIFIABLE TYPE JRAINING FLIG~I; ~o;;N~ R;;~ECTED 12ACTIVE SAM BATTALIONS 1 H_HILE ELI.·N·· _T· ~ -k.IERE O:lAlHED: : SIGINT REFLECTED 28ACTIVE RADAR .. STATIONS~ ·

1 asFn filcATEHAF=~~T~~~~~~NgF R~~~R~rn ~~§¥~l~~~~cn~¥hVIrno . · REFLECTED NINE ACTIVE NAVL RADAR STATIONSTRACKING ONE AIRCRAFT ANiJ 148 SURFACE~ VESSELS.SECTION THO - FIGHTER ACTIVITYPART ALPHA DURING THE sass llOUR, A USAF '-· ----· STRIKE FORCE OF 39 F-185'S ~ND16 F-4C'S, HERE TARGETED AGAINST THE KEP ARMY BARRACKS CCS39.'f3>FOUR HANQl GIA LAM-BASED MIG-17' AUD fOUR KEP-ASEDMIG-17'S , PERFORMED DEFENSIVE PATROLS IN REACTION TO THIS STRIKEFORCE. ORV ASF INITIALLY REFLECTED THE STRIKE FORC~AT S825Z, OVERTHE GULF J~TOHKIN, SOUTHEAST OF

-HAIPHOHG. TRACKED IN THREERAIDS, AMPLIFIED AS TENTO THEHTY-FIVE HOSTILE AIRCRAFT, THESTRIKE FORCE /HEADED NURTH, TtlE LEAD FLIGHT PENETRATED DRVAIRSPACE AT 8835Z, 48NMS EAST OF HAIPHONG.· THIS FLIGHT CONTINUEDNORTH 23MS, THEN TURHED WEST AND HEADED DIRECTLY~O KEP,HHERETRACKING CEASED AT 9852.THE SECOND FLIGHT PENETRATED DRV AIRSPACEAT S842Z, 22NMS EAST OF HAIPHOUG, FLEJ.-1 GENERALL .. Y NORTH TO 8HMSEAST OF KEP HA AT S844, THEN TURNED ~IEST AND HEADED DIRECTL YTO~IARDS KEP,HHERE TRACKING CEASED AT S85lf.THE THIRD FLIGHTPEtlETRATED ORV AIRSPACE AT S846, 13MS SOUTHEAST OF YHAIPHOt:lG,HEADED GENERALL'Y NORTH AND, AT S849Z, 16MS

-EAST OF KEP HA, THEFLIGflT TURNED· WEST AND H~ADED DIRECTLY FOR KEP. THIS FLIGHT

SEeR:ET SP6KE ., (b) ( 1) v "

(b) (3)-50 USC 4 03 (b) (3)-18 USC 798 (b) (3)-P.L. 86-36

~~--~·· -···---~~-· _ ___!:·--=---~- _____a;,:__ ··----'---- . -- _:._. ----· -~- ->--~~

@'pproved for release by NSA on 05-14-2014, Transparency Case# 65888

· --·------

·· -··- _,~·- _ ..... ~~-~~

""' . ~

-·· ~ "' w

l . ' .. lJ a '.

' • \,71. (,J '1

~ " "1 _ .. "'J

Page 2: DOCID: 4137487 - National Security Agency€¦ · docid: 4137487 • . / " se6ret spske hastracked over kep at 8853, circled,then has dropped at 8858,0n it's egress • 14nms southeast

DOCID: 4137487

• . / "

SE6RET SPSKE

HASTRACKED OVER KEP AT 8853, CIRCLED,THEN HAS DROPPED AT 8858,0N IT'S EGRESS • 14NMS SOUTHEAST OF KEP.THE INITIAL REFLECTION OF MIG ACTIVE IN REACTION TO THE USAFSTRIKE FORCE OCCURRED- AT 184iJ. AT THIS TIME, FOUR ~K.!l_RCPMfllQIED MI0-17 1 ' ~--- __ , HERE REFLECTED AIRBORNE OVER KEP. THE -IWRCOMSWERE ORDERED TO GUARD OVER THE AIRFIELD AT ALTITUDES RANGING FROM58STO 7SSFEET. THE HOSTILES WERE REFERRED TO AS FLYING ATALTITUDES RANGING FROM 838S TO 98SSFEET. THE~ORCOMS-HERE · CON-STAtlTLY ORDERED BY THE KEP AIRFIELD CONTROLLER TO REMAIN AT.LOSALTITUDES.AT 8858, THE KEP AIRFIELD CONTROLLER HARNED THE MIGS"ON' RAISE <OUR ALTITUDE) •.• HEY CTHE HOSTILES>ARE ABOVEYOUR, ALTITUDE 98SS FEET ... DON 1 GO UP, DESCEHD ..• DECREASE THEALTITUDE,DON' FOLLOW AND GO UP,COME DOWN.n AT 8852, THEKORCOM FLIGHT LEADER ACKNOWLEDGED THESE WARNINGS AND REPORTED" HILL NOT GO UP,THE-H~ST~LES ARE .UP THERE.n HE THEN ORDEREDHIS FLIGHT TO "ONER THE ALTITUDE, DO 'IT NOW. 0 THE XORCOMSORBITED OVER THE IMMEDIATE VICINITY OF KEP UNTIL S9'7Z, HHENTHEY HERE ORDER.ED TO "HITCH OFF GYRO-GUNSIGHT 11 AND LAHD .XXHH 988 NNNN

-•

·- • ·-...:..· r. ft.:.. ' . -- · ~-. • ·' -

SESRET 5f'8KI!

------

-------

Page 3: DOCID: 4137487 - National Security Agency€¦ · docid: 4137487 • . / " se6ret spske hastracked over kep at 8853, circled,then has dropped at 8858,0n it's egress • 14nms southeast

(b) ( 1 )

(bl qqG~P ~~~~~~4a7 (b) ,-, - - --- ·--b) (3) -P.L. 86 - 36~~~~~~~~~~~~-~~~~- -------------

CATEGORY = 1

MESSAGE = 00342170

'1~71t5Z HH FM SJ-794 TO SCAR . )(/GOLl=,

SEe~Ef !l'OKE

/ ( b ) ( 3) - P. L. 8 6-3 6

ZEM 5 E 6 R E T S~VIH SECTION FOUR OF SIX

XXMM ,, ' EHPU4-Z31g57 /g6iVCK~/Rlg4-67 PRELIMINARY AIR ACTIVITY REPORT xx cc

M = 956

SAM N C

~JI LL AN ACTIVE BATTALIO~UNTIL HOT REFLECTED

FROM EJ121Z TO JJ135Z, 31 MAY, DRV1...~1UL TICllAM:IEL COnliVIUCATIOl~S _R_E ___ F_L .... Ec"""r,....,E"""o ......... T'"""ll .... E-C"""o--1~ ..... VERSATIOH OF AN UNIDENTIFIED SAM ATTALIOtl LOCATEDill THE ·· lfAIPHONG AREA.AT Bl21Z, AU UNIDENTIFIED PER~OHALITY REPORTED TllAT .A

llOSTILEAIRCRAFT HAD BEEN SHOTDOWI: THAT HIE DOLl!:~ED PILOT HAD · • .. EJECTED:AHDSUDSEQUENT . TO IHS LAHDitlG, A HELICOPTERHr1D COME TO RESCUE HIM. HIE SPEAKER STATED TllAT llE DID UOT KUOloJ IF TtlE DULJNED PILOT 11.1'.VBEE::H CAPTURED.AT IJ135Z. THIS S.\ME PERSONALITY REPORTED HI/IT SAMD.'1TTAL 1011 Vl4JJ2"\ H;\D LAUllCHED nm MISSILES CAT AH UNSPECIFIED TIME>AHD POSSIBLY DESTROYED A HOSTILE AIRCRAFT.IT IS rn·TERESTIHG TO NOTE THAT WllILE ORV rMlJlTfCllAlltlEL: cor·::w11tt::A-TIOllS FAILED TO REFLECT TllE AllOVE LAUNCH ACTIVITY BY .Vl4·~n: AHH3!f, V14-'12:1·!i\S HOTED PROBABLY RELAYING A BATTLE DAMAGE REPORTRECEIVED FROM AllOTHER §AM BATTALIOH TO THE HAIPHOHG REGIMENTALCONT~OLLER. AH UNIDENTIFIED PERSOtlALITY AT ~l4A2STATED ntATTHERE ~JAS DAMAGE TO THE CONTROL VAN: CROKEN CABLES: AllD FOUR MCllSERIOUSL Y WOUHDED.THIS SPEAKER ALSO STATED, "CAH' REPAIR ·THEMISSILEC> YET •• HE AH3ULANCE AHD THE EQUIPMENT ARE All DAMAGED-BURNED-." OPERATIONAL DATA REFLECTS THAT . 4

DURING THE COURSLOF U •• NAVYSTRIKES OH TllE LOI DONG lllH> CONG f'lY TRAtlSllIPNENT POINTS,ShM SITEVHD9~WAS BOMBARDED WITH 76ROCKETS C2.75IHCll)i\T APPROXIMATELYGlOO.A SECOllDARY EXPLOSION WAS OBSERVED CY TllESE PILOTS. HIISSTRIKE Oii SUE YNCJ'13 IS BELIEVED TO CORRELllTE l•JITll TllE REPORTIIHERCEPTED FROM Vl41J2:. VH093 HAS llEEtl CORRELATED mm TllE COllllHIOEtHIFHD SArl <B.\TTALION :Vl474.'.FAtlSONG AND SPOOllREST IMPACTS HAV;EflEEH HITERCEPTED Ill TllE VICHHTY OF VNS93SIHCE AT LEAST llDECEMBER, 1966. OPERATIOll.\L DATA ALSO REFLECTS THAT EIGHT SAMSl~ERE SIGllTED BY .!!_,_,<;_,_PILOTS BEHJEEN !Hl45Z /l.IW 11101Z: HO!·!EVER, NOUE OF THESE . SIGHTINGS CAN BE CORRELATED TO THE ABOVE ACTIVITY.3.FROM 0211 TO 025SZ,

-31MAY. ORV MUL TICHAIHlEb COMMUHICATimlSREFLECTED A POST-LAUtlCH REPORT DY st.M . BATTALION Vl't71l:LOCATED AT2113 11J614E. AT fl211Z, AN UllIDENTIFIED PERSllllALITY REPORTED THAT AT Dll9Z, TWOMISSILES HAD BEEN ALUllCHED AGAIHST A FLIGHT UF FOUR AIRCRAFT IDEllTIFIED AS "A3C, THEii A4 AND F8". THE FIRST MISSILE ~JASLAUJlCll::U USlllG TllE INTERCEPT f'IETllOD WITH A SIT'E..:.0-ATARGET CST>RtliiGE OF 11 lli"IS OH All AZHlUHI OF Jf55 DEGREES WHILE TllE Sr=COHDMISSILE WAS LAUNCliEp,.'IS THE TARGET l!AS EGRESSillG, USING TllETRAILillG f'IEHIOD WITH A ST RAllGE OF HJ:IMS Otl All /,ZIMUTll OF U!ii!DEGREES. TllE "RF" CLEl\O MIGLE> MEHIOD OF GUIDflllCE ~IAS USED FORnorn Lt.UllCHES. TllE SPEAKER

°":MADE ONE REFERENCE TO ECM,HOl~EVER,Itf·TllE PAST TllE METHOD OF GUIDANCE USED <LEAD ANGLE> HAS PRIMAR-ILY IlEEH DEPLOYED AG.\INST·TARGETS NOT EMPLOYIHG ...

5i~RH S~BIEE v

\

-· - -· ----~~--·· --·--· ------~--~---'"-------'--.<___:_~--

--- . ·- -- · - -

Page 4: DOCID: 4137487 - National Security Agency€¦ · docid: 4137487 • . / " se6ret spske hastracked over kep at 8853, circled,then has dropped at 8858,0n it's egress • 14nms southeast

DOCID: 4137487

.~ ..• si;:eur SPBICE

ECM.OPERATIONAL DATA INDICATES THAT OllE A4 CFLYIH~ EAGLE 223> WASLOST Itl THE VICINITY OF 2134 l063rJE AT lJ115Z BUT THIS LOSS ~JASV ATTRillUTED TO Afl..'1 VICE SAMS.SEVERAL SAMS I.JERE SIGHTEDSY U.S. PILOTS Ill THIS AREA.'1.r-1:m1 054<;Z TO C651, 31MAY, ORV ~IU.Ltl:Ciii'.tltlEL COMMUHICATIOtlSREFLECTED A POST-Li'.UNCll REPORT BY Sf\M DATTALION ·VVl72lOCATED AT21J56 11J556. AT 054'•• TllE 2381t REGUlDITAL COllTl~OLLER REQUESTED POST-LAUt:CH HIFOR~ll\TIOU FROM SAM Dl\TTALIOW-\i1<172. Ill THE EtlSUIHGCONVERSATIOH THE SITE REPORTED THAT A TARGET,ID~~TIFIED AS TWOF4'S,WAS INITIALLY PICKED UP OH AH AZIMUTlt OF llJ[J DEGREES 1.JITllA ST RAllGE Of 22,63t!MS.AT 11534, THE FIRST MISSILE HAS LAUtlCllEDIHTH A ST RANGE OF llJ. 8 llMS OU. AH AZIMUTll OF 90 DEGREES.SIXSECOtlDS LATEn, A SECOtlD MISSILE WAS LAUHCHED l-JITH A ST Rfl.HGE OF8.64HMS ON AH AZIMUTH· OF 92 DEGREES.TllE TARGET REPORTEDLY TOOKEVASIVE ACTIOH CDIVEDltlD THE LAUNCHES WERE UNSUCCESSFUL. ATD551,Ill A FillAL HRAP-P OF TUE ACTIVITY, H UIHDEtlTIFIED SPEA-KER AT TllE SITE REPORTED TUAT 1:0 JAMMillG OCCURl!ED OH THE IIHTIALDETECTIOH OF THE TARGET:- HmJEVER,Al THE Til1E OF THE LAUllCMESHIE SITE EXPERIENCED JAMMING DEFINED AS "ONFUSIOH AND FALSETRACE DECEPTION". OPERATIONAL DATA ItlDICATES THAT - NO SAMS WERE SIGHTED BY U .. PILOTS DURING TllIS TIME FRAME.XXHH 89r NN~N

~- --~ -::. ____ .... -'

•.

SE6RET SPBiO:; . . '

----""'-'- - ___..:!.. __ '- - ~-- _: . - ·-----