'\b) (3)-P.L. 86-36 Dt/CID: .:41307·43

(b) (1)

"" !;£CRH ttHHA

_CA-TEGORY = 1 "' = 948

MESSAGE = 81976555

·.·.· .. ~·-.c_... · ~~EXB915 LOG LH ND. 86? .~ - 8591.18392 1592l't~

. SH · ZKZl( OD ZLZ DID DE 0 872838Z ·JUH 72 ZYH FM DIRHSA T 0 H"SA.l:imIFDRl!J. VICTOR ZEM ·.

.. -

Tep ~.E.e Iii£ T HMllRA" l!HTAR SECTION ONE OF TWO PORTIONS OF THIS REPORT CONTAIN ISllT.AR 1'1A-TERIAL. . XXMM - . .r--1..- . . . EHPS1F0072159 31'001L....JV"A7E'l'Rl68-72 · . . :

-'-AVNl'AVIA-A.OPER-A-V-Jl,TRKG-A.-V_, TCOl't-A.-Y-.,£l:SY":A-V'1~ ·AXX.WXX/l;VU;-'O'. ,·AXXi'DPER.'.""V/~ .HORT» VIETNAMESE AIR SUMMARY FDR g5/i)ggz· TO "if6./17SlfZ JUNE 1972 xxcc .

CALL TIMES ZULU> PART ONE, HIGHLIGHTS A. SUMMARY NVH AIR DEFENSE TRACKING DF AHD REACTIONS TO ~A.IR STRIKES OVER HVH, 5. AHD 6 JUNE. B. DETAILS BETWEEN 1851 DH 5 JUNE AND 1552 OH 6 JUNE, HVN AIR SURVEILLANCE FACILITIES WERE NOTEt'I TRACKING A MINIMUM OF 174.$HOSTILE$ AIRCRAFT OVER THE VINH, THANH HOA, YEN BAI, PHUC YEH, MOC CHAU, KEP,.KANOI, AND HAIPHONG AREAS. FIGHTER REACTION TO THESE STRIKES CONSISTED OF TWO MIG~21'S FROM PHUC YEN FLYING DEFENSIVE PATR~L. AND TWO .1'1IG-2l'S FROM PHUC YEH ATTEMPTING TO ENGAGE THE HOSTILES. DURING THIS SAME PERIOD. AT APPROXIMATELY 8416 • AN UNIDEHTIFIED SAM BATTALION. POSSIBLY EITHER BATTALIOHi76 OR 79 OF THE 257TH SAM REGIMENT LAUNCHED TWO SA-2 MISSILES AT AH UHIDEHTIFIED TARGET. 'SUBSEQUENT BATTALIOH-TO-REGIMEHT COHVERSATIOHS REVEALED TH~T BOTH MISSILES EXPLQDED WELL AND THE $TARGET FELL FOUR KILOMETERS SOUTH O~ YEH BIHH C21-S5H lS4-57E),$ OPERATIONAL SOURCES REPORT AH F-4 WAS SHOt DOWN. BY 'A SAM u·APPROXIMATELY S'428 IN.THE YEN. BU AREA. LATER. AT .lf61S AH UHIDEHTIFIED OPERA.TOR REPORTED. 8THEY HAVE GOTTEH AH~. OF THE WRECKAGE OF THE AIRCRAFT AHD BOTH OF THE BANDIT UJ...DIS ARE DEAD$. C2 . C.0R544-72, S6S429 JUHE A:!D FOLLOW-UPS, DIRNSA PRODUCT FORTHCOMING> T TWO. RDUTIHE ACTIVITY A. AIR ACHVITY TEH MIG-21 PILOTS AT PHUC YEN WERE PLACED OH STRIP ALERT. MIG-21 PIL.OTS AT PHUC YEH CONDUCTED ONE UHIDEKTIFIED, FOUR HAVIGATI°DNAL TRAINING, AND THREE PRACTICE GCI SORTIES. TWO L-29 PILOTS AT GIA LAM PERFORMED PRACTICE GCI, ANb ONE MIG-17 PILOT AT KEP AND TWO MIG-19 PILOTS AT YEN BAI CONDUCTED UNIDENTIFIED ACTIVITY. TWO MIG-21 'S FLEW FROM ICEP TO PHUC YEH. TWO LI-2 PILOTS PERFORMED TAKEOFFS AND LAHDIHGS AT GIA LAM, AND ANOTHER LI-2 FLEW FROM PROBABLY KEP TO GIA LAM. TWO MI-4 PILOTS CONDUCTED UNIDEHTIFIED ACTIVITY IN THE GtA LAM

/ AREA AHO ONE MI-6 CONDUCTED AIRCRAFT DISPERSAL OPERATIOHA IH' THE ·KEP AREA, FLEW .··· FROM KEP TD GIA LAM, AHO CONDUCTED UHIDEHTIFIED ACTIVITY IH THE KEP AREA. OHE -83117 FLEW THE ICC ROUND TR:IP BETWEEN VIENTIANE AND GIA LAM USllTAU. B. SAMl'AAA

ACTIVITY - HTR C. RADAR ACTIVITY NVH AIR SURVEILLANCE FACILITIES ~ERE NOTED TRACKING THE GIANT SCAlE SR-71 FLOWN OVER SOUTH VIETNAM •• NORTH VIETNAM, LADS AND THAILAND DURING THE ffSS8 TO 8"681!1 HOURS, A BUFFALO HUNTER DRDHE FLOWN IN THE VIET TRI AREA DURING THE sass AHD 891J8 HOURS. AND A BUFFALO HUHTER DRONE FLOWN OVER SOUTHERN HVH DURING THE 86BIJ HOUR. D. COMMUHlCATIONS DEVELOPMENTS 1. RECENT HVAF AIR OPERATIONS C0f'1MUHICATIONS :HAVE SHOWN THE PHUC YEH AIRFIELD

._TERMINAL AS A SUBSCRIBER OH THREE COMl'JUNICATIOHS GROUPS. ut:E~:P-lltl.C ·y:EN: .T:ERM:I:NAD

I

(b) (3)-50 USC 403 (b) (3)-18 USC 798 (b) (3)-P.L. 86-36

.~

. . I. . ~·...:·-

, . . '--r

@'pproved for release by NSA on 07-09-2014. Transparency Case# 65886.

:'~ ,. ~. ·\ ~=!

...

..

1194'

DOCID: AlJ0.7.43 ····· "-

i'

TOI' S!e,R:Ef. HMIRA. ... ·.· .... . : : ~- .' ·'

~- •. . ·.: .... . ...

'W"A.S Alf tJRIGUJA.t: · SU:BSCRIBER: O.K "THE NVAF HDRTHER.M ·UR OPERATIONS t:Ot1M:tnU.C/l·Titlff:5 .GR-OUP WllH CDNTRDl AT HANOI BACH" MAI AND OUTSTATIONS AT PltUC YEI!· LA.HG S.O.», KIEN A.ff AHD YEH BAI AIRFIELDS AND Al HAT LOT GCI SI.Ti:. PHtfC YEN 111': BEEH NOHD WDRKltl& LATERALLY SINCE ' ttAY 72 WITH THE HOA UC. TERMI.HAt ON A SEC0.1~!' NVA.f- '.:> NORTHERN UR OPERATIONS COMMUNICATIONS GROUP. THIS STATION HAS AlStJ BEl::"lf tmreo WORKING W-ITH THE HANOI BACH MAI CUffTROL STATION ·OF ·ONE OF TliE HVAF .SOU.Ttt!;;F:!li AIR .::. C:WERAJIONS· CDMMURI-CATlONS GROUPS~ THE RECENT APPEARANCE OF PHUC YEN ON TH~SE ·. TWO ADDITIONAL COMMUHICATJOHS GROUPS IS PROBABLY RELATED TO THE DEPLOYMENT~ BEGINNING IN LATE APRIL OF MIG-z1•s OF THE 921ST FIGHTER REGIMENT,

-..

i

HEADOUARTEREt> AT PHUC Y.EH, T.O AIRFIELDS WHICH APPEAR OH THESE CDMMUHICATIOHS GROUPS. ·THE DEPLOYMENT OF THE MIG-2l'S IH RESPOHSE TO CURRENT U.S. AIR STR~KE~. THE APPEARANCE OF THE PHUC YEH STATIOH OH All THREE GROUPS GIVES THAT STATION THE CAPABllITY TO MAIHTAIH ADMINISTRATIVE AND OPERATIOHAl COHTROL OVER FIGHTERS OF THE 921ST FIGHTER REGIMENT DEPLOYED .THROUGHOUT HORTH VIETNAM. XXHH 9SS 18591 HHNN

.·