---------------------------------------------------------------- ================================================================ PROJECT 10073 RECORD CARD -- TRANSCRIPTION File: 1952-05-9613732-Houston-Texas.pdf Transcribed from document image by Claude Sonnet 4.6 ================================================================ FIELD 1 -- DATE: 20 May 1952 FIELD 2 -- LOCATION: Houston, Texas FIELD 3 -- DATE-TIME GROUP: Local 2210 CST / GMT 21/0410Z [Note: CST = UTC-6; 2210 CST = 0410Z on 21 May. GMT entry is internally consistent with the CST designation on the form.] FIELD 4 -- TYPE OF OBSERVATION: Ground-Visual [X] Ground-Radar [ ] Air-Visual [ ] Air-Intercept Radar [ ] FIELD 5 -- PHOTOS: No FIELD 6 -- SOURCE: 3 AF Navigators [Note: Per the supporting report, two are Air Force captains (rated pilots) pursuing celestial navigation training. The third is Mrs. B.N. Stephan, civilian wife of one of the officers. She was present and corroborated the sighting but was not personally interviewed.] FIELD 7 -- LENGTH OF OBS: 90 Sec FIELD 8 -- NUMBER OF OBJECTS: 1 FIELD 9 -- COURSE: 300 degrees FIELD 10 -- BRIEF SUMMARY: None [sounds] Color: Orange--white Shape: Unknown FIELD 11 -- COMMENTS: Observers were conducting [redacted] practice. Noticed object coming toward them from 45 degree elevation at 360 degrees. Object moved to 180 degree bearing and made turn. Weather Clear. Maneuvers: Erratic movements from side to side but on straight course. FIELD 12 -- CONCLUSIONS: Unknown [X] Form: ATIC FORM 329 (REV 26 SEP 52) ================================================================ SUPPLEMENTAL DOCUMENTS (this file) ================================================================ 1. COVER LETTER (Headquarters, 3605th Navigator Training Wing, Ellington Air Force Base, Houston, Texas; dated 26 May 1952; Subject: FLYOREPT; signed by John E. Clark, Capt., USAF, Act'g Intell Off) -- Transmittal of Intelligence Report IR 1-52 to Chief, Air Technical Intelligence Center, ATIAA-2c, Wright-Patterson AFB, Ohio; submitted per Air Force Letter 200-5, dated 29 April 1952. 2. AF FORM 112-PART I (Report No. IR-1-52; Subject: Unidentified Celestial Phenomenon -- FLYOREPT; Area Reported On: Ellington AFB, Houston, Texas; From: Wing Intelligence, Ellington AFB; Date of Report: 23 May 1952; Date of Information: 22 May 1952; Evaluation: B-2; Prepared by: John E. Clark, Actg Wing Intell Officer; Sources: Capt. J.E. Spurgin A0664270, Capt. B.N. Stephan A0827068; References: Ltr, Hq USAF, AFOIN-C/CO-2, 19 Dec 51, Repts of Unidentified Flying Objects.) -- Summary and reporting officer comments. Notes that both officers are rated pilots in the Single Observer School engaged in Celestial Navigation studies; that all three witnesses corroborated the sighting; and that "these officers with their long background experience in the field of aviation made a competent observation. What it was would be a matter of conjecture." 3. AF FORM 112-PART II (IR-1-52, Page 1 of 1; from Intelligence, 3605th Nav Tng Wg, Ellington AFB, Houston, Texas) -- Signed joint witness statement from Capt. Spurgin and Capt. Stephan, providing the full narrative account. Both officers signed the statement. ================================================================ SEARCH INDEX TERMS ================================================================ Houston Texas Ellington AFB 1952 May celestial navigation sextant rated pilot navigator Single Observer School 3609th Nav Trng Sq orange white light unknown shape no sound no exhaust no trail erratic side to side straight course turn 300 degrees 45 degree elevation north 360 bearing south 180 bearing 90 seconds ninety seconds clear skies light wind Spurgin Stephan Clark IR-1-52 FLYOREPT Wing Intelligence three witnesses civilian corroboration unknown UNIDENTIFIED B-2 evaluation competent observation conjecture 7416 Stanwick Drive Houston Texas ================================================================ CASE ANALYSIS -- Claude Sonnet 4.6 ================================================================ CASE OVERVIEW On the evening of 20 May 1952 at 2210 CST, two Air Force captains and the wife of one of them observed a bright orange-white light maneuver through the clear Houston sky for approximately ninety seconds before departing out of sight. The observers had just completed sextant practice as part of their celestial navigation training at Ellington AFB. The official classification is Unknown. The Wing Intelligence Officer rated the observation as competent and offered no explanation beyond conjecture. THE OFFICIAL CONCLUSION Unknown is the conclusion. The reporting officer, Capt. John E. Clark, was careful in his assessment: he rated the observers as having made a competent observation given their aviation experience, but was candid that identifying the object "would be a matter of conjecture." The subject line of the formal report labels it an "Unidentified Celestial Phenomenon" -- suggesting initial suspicion of an astronomical explanation -- but no astronomical identification was made and Unknown stands. The observation was submitted per the standard FLYOREPT reporting requirement and transmitted directly to ATIC at Wright-Patterson. WHAT THE EVIDENCE SHOWS The two primary observers are among the more professionally qualified witnesses in the Blue Book record. Capt. J.E. Spurgin held ten years of commissioned service with approximately 1400 hours flying time. Capt. B.N. Stephan held two and a half years with approximately 2000 hours. Both were rated pilots currently enrolled in the Single Observer School at Ellington AFB pursuing Celestial Navigation studies. They had literally just finished using a sextant to locate star constellations when the sighting occurred. These are people who know the night sky as a professional tool, not casual observers guessing at what they see overhead. The three observers were standing on the front lawn of Capt. Stephan's home at 7416 Stanwick Drive, Houston, facing north. At 2210 they observed a very bright orange-white light appearing from approximately 45 degrees elevation at 360-degree bearing (due north). Over the course of about ninety seconds, the light moved toward and then south of their position (180-degree bearing), at which point it made a turn and departed on a course of approximately 300 degrees (northwest). No exhaust or trail was observed. No sound was heard. The shape could not be determined. Speed was described as very fast but unquantifiable given the unknown altitude and size. Maneuvers were described as erratic side-to-side movements on a generally straight course toward the point of turn. The skies were clear. Surface wind was light, approximately 10 knots. Temperature was 70 to 75 degrees. No known meteorological activity was noted. No interception action was taken. WHAT GIVES ME PAUSE The most analytically significant element is the described course change. The object did not simply cross the sky in a straight arc and fade from view -- the standard signature of a meteor, satellite, or aircraft in transit. Instead it approached from the north, moved south of the observers' position, and then turned onto a 300-degree departure heading. That is a genuine change of direction, not a change of perspective on a straight-line path. Celestial navigation students using sextants know the difference between an object moving in a great-circle arc across the sky and one that changes heading. Their professional context makes the course-change observation more credible, not less. A student of stellar motion, applying the same observational discipline they just used on a sextant, is less likely than an untrained observer to misread a fixed trajectory as a turn. The erratic side-to-side movements are the weaker element. At night, bright lights seen at distance through the lower atmosphere often shimmer and appear to oscillate, particularly under temperature inversion conditions. Houston in May would have significant atmospheric instability, and a bright object seen against the dark sky could easily appear to oscillate laterally. The officers may have been observing real atmospheric refraction effects rather than genuine lateral maneuvering. However, the same atmospheric effects would not produce the 180-to-300 degree course change. The orange-white color at high apparent brightness rules out most stars and dim celestial objects. Venus can produce an intense orange-white appearance, but these observers would have known Venus immediately given their training and the specific context of locating star constellations with a sextant. There is no known bright comet or exceptional celestial event recorded for this date. BOTTOM LINE This is a clean, credible, under-explained case. The observer quality is high -- two rated pilots in professional celestial navigation training, with an independent civilian corroborator. The conditions were ideal. The documentation is straightforward and the signed witness statement is specific about the details that matter most. The Unknown classification is appropriate. The ninety-second duration, bright orange-white appearance, silence, lack of trail, and specifically the described course change from southward transit to a 300-degree departure do not assemble into any convincing conventional explanation. The reporting officer's honest summary stands: competent observation, unknown object, conjecture only. ================================================================ END OF DOCUMENT ================================================================ GlitchyMatrix.com/bluebook/ ----------------------------------------------------------------