From 44 to 93 — Group 210, Mr. Van, and the Baron 52 Intercept

On the night of 5 February 1973, just nine days after the Paris Peace Accords were signed, an NSA intercept reported that Group 210 was holding four “pirates” and moving them from kilometer location 44 to kilometer location 93 under the control of “Mr. Van,” while experiencing difficulties along the road.

In this episode we examine the full body of evidence now surrounding that intercept. We identify Group 210 as the 210th Anti-Aircraft Artillery Regiment, reinforced into the Division 471 sector during the 1972–73 dry season. We identify “Mr. Van” as Lieutenant Colonel Lương Khánh Vân, Political Officer of the 377th Air Defense Division and the officer responsible for POW handling in that sector. We show why kilometer location 44 correlates to the Tang Cat area under Binh Tram 35 control — the same sector where Baron 52 crashed — and why new testimony from a Binh Tram 35 truck driver who recalled operating from kilometer location 94 strengthens the intercept’s terminal point.

We also examine the consistent PAVN use of the terms “pirates,” “pirate pilots,” and “pilots” as standard slang for U.S. aircrew in the southern Laos corridor, and we explain the Vinh Window communications architecture that caused southern Laos traffic to appear in NSA collection with Vinh-area indicators. The 1971 Jack Butcher case is referenced as historical proof that the same collection system successfully tracked an American airman moving through the southern Laos Binh Tram network.

Taken together, the evidence supports a high-probability reading that the four back-end crew members of Baron 52 — Sgt. Dale Brandenburg, Sgt. Peter R. Cressman, Sgt. Joseph A. Matejov, and SSgt. Todd M. Melton — survived the crash, were captured, and were moved alive through the Binh Tram 35 / Division 471 logistics network.

Key Topics Covered:

• The core language of the REFNO 1983 intercept
• PAVN terminology: “pirates,” “pirate pilots,” and “pilots”
• Identification of Group 210 (210th AAA Regiment)
• Identification of “Mr. Van” (Lt. Col. Lương Khánh Vân)
• Geographic correlation of Km 44 to Tang Cat / Binh Tram 35
• New evidence linking Km 93 to a known Binh Tram 35 kilometer location (Km 94)
• The Vinh Window relay architecture and the Jack Butcher precedent
• How the six elements form one coherent operational picture

Primary Sources Referenced:

• National Security Agency, Unidentified NVN Element Reports on Movement of Prisoners, Follow-up Number One and Final (2/R0/186-73, 050630Z Feb 73), DOCID 4132644
• National Security Agency, Unidentified Multichannel Conversation Reveals Captivity of Four Pilots (2/R0/182-73)
• NSA POW/MIA Correlation Studies (multiple REFNOs documenting “pirate pilots” terminology, 1970–1972)
• Hoàng Sĩ Khiêm, Sư đoàn 471 Trường Sơn trong mùa khô năm 1972 (Signal Battalion 446 memoir)
• Nguyễn Đức Năm, Facebook post, “HỘI TRƯỜNG SƠN SƯ ĐOÀN 471 ANH HÙNG,” July 2026 (C1/D59, Binh Tram 35)
• Nguyễn Văn Trung, “Quên mình cứu đoàn xe chở xăng,” Quân Đội Nhân Dân, 2017
• Joint Task Force-Full Accounting, Investigation Report on Case 1437 (Corrected Report), 22 May 2002
• Flynn, William G., and Sharon Maneki, “The Jack Butcher Case: A Story of Courage, Commitment, and Concern,” Cryptologia 37, no. 3 (2013)

Full Documents:
The complete Intercept Addendum and the full Baron 52 research package are available at:
https://www.storiesofsacrifice.org/blog/baron52/

#Baron52 #POWMIA #GoldStarFamily #FullestPossibleAccounting