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1959 · Wright-Patterson AFB, Ohio

Project Blue Book

On the record
Strength A · 9/10 · 3 independent
Evidence 4/4 · Witnesses 3/3 · Backing 2/3

The Air Force's own Bolender memo confirms security cases bypassed Blue Book, and its named scientific consultant Hynek came to think something real was going on.

Plausibility Very high
Score 15 · 8 factors for, 0 against

The Air Force's Bolender memo confirms security cases bypassed Blue Book, and Hynek came to think something real was going on.

See the factors ↓

Aggregate
Part ofThe cover layer
When1952 – 1969
WhereWright-Patterson AFB, Ohio
Backing3 independent
Evidenceofficial records, documents

The Air Force's public UFO investigation collected 12,618 reports. 701 stayed 'unidentified'. Its scientific consultant, astronomer J. Allen Hynek, began as a skeptic and left convinced something real was going on. After the University of Colorado's Condon Report, Blue Book closed on December 17, 1969, with the Air Force saying UFOs posed no threat. Researchers point out that a 1969 memo by Brig. Gen. Carroll Bolender stated that reports affecting national security would keep going through other channels.

Evidence, in date order (3)

  1. 1955Department of War (war.gov)document
    Project Blue Book Special Report No. 14 war.gov: Project Blue Book Special Report No. 14
  2. 1969National Archivesdocument
    Blue Book records with 701 cases left unidentified National Archives: Project Blue Book records
  3. Oct 1969Brig. Gen. Carroll Bolenderofficial
    1969 memo saying security-relevant reports went through other channels, not Blue Book

How plausible · Very high

The Air Force's Bolender memo confirms security cases bypassed Blue Book, and Hynek came to think something real was going on.

  • ●●
    Access Direct observation or instruments.
  • ●●
    No gain sought Nothing to gain.
  • ●●
    Character record Trained professionals.
  • ●●
    Independent convergence Independent sources agree.
  • ●●
    Checkable details check out Released official records.
  • ●●
    Fits the documented skeleton Fits the documented record.

Plausibility weighs how well an account fits where secrecy hides the documents by design, so missing records never count against it. Strength measures what is documented. Assessed 2026-10-23.

On the record

Claims

Blue Book was a public front while the real study went elsewhere.Fukuoka: an F-61 night fighter and the 'rifle bullet'USS Hassayampa: four radar targets circle the shipAscension 1960Catalina Island Unresolved UAP ReportsEdwards 1965Loch Raven 1958Marcala 1950Minot 1968W-93 1958RB-47 1957speculationSourced, unconfirmedbelievers
Project Grudge labelled the Lubbock Lights 'migrating birds', against the view of the professors who saw them; Hynek called Grudge 'less science and more of a public relations campaign'.The Origin of the UFO StigmaProject SignfirsthandSourced, unconfirmedProject Grudge; J. Allen Hynek (cited by UAP Gerb)
AFR 200-2 (1953) sent confirmed reports to Air Force intelligence rather than Blue Book.The Origin of the UFO StigmaFukuoka: an F-61 night fighter and the 'rifle bullet'USS Hassayampa: four radar targets circle the shipAscension 1960Catalina Island Unresolved UAP ReportsEdwards 1965Loch Raven 1958Marcala 1950Minot 1968W-93 1958RB-47 1957firsthandOn the recordAFR 200-2 (1953)
Quintanilla told the House Armed Services Committee on 5 Apr 1966 that Blue Book had 'no radar cases that are unexplained'; Hynek later cited Goose Bay 1951, Lakenheath 1956 and Shreveport 1957 as radar unknowns.Lakenheath-Bentwaters: radar targets and the Venom interceptFukuoka: an F-61 night fighter and the 'rifle bullet'USS Hassayampa: four radar targets circle the shipAscension 1960Catalina Island Unresolved UAP ReportsEdwards 1965Loch Raven 1958Marcala 1950Minot 1968W-93 1958RB-47 1957firsthandOn the recordHASC hearing record (5 Apr 1966); J. Allen Hynek
Robert Low's 1966 memo described 'the trick' of making the Condon study look objective while expecting to find nothing.Robert Low's 'trick' memo on the Condon study (1966)firsthandOn the recordRobert J. Low (memo, 1966)
The National Academy of Sciences endorsed the Condon report in 1969, and Blue Book closed.Fukuoka: an F-61 night fighter and the 'rifle bullet'USS Hassayampa: four radar targets circle the shipAscension 1960Catalina Island Unresolved UAP ReportsEdwards 1965Loch Raven 1958Marcala 1950Minot 1968W-93 1958RB-47 1957firsthandOn the recordNational Academy of Sciences (1969)

war.gov files on this case (3)

PDFCorrespondence Relating to Project Blue Book, 1955DOW · Release 04 · 1955
PDFDepartment of the Air Force Committee to Review Project Bluebook, 1966-1967DOW · Release 04 · 4/17/67
PDFProject Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)CIA · Release 03

In The picture

The crashes and the keepersAir Force General Twining wrote in 1947 that 'the phenomenon reported is something real'. Project Sign's analysts reportedly concluded the saucers were interplanetary, and copies were said to be burned. In 1953 the CIA's Robertson Panel recommended debunking. When Blue Book closed, a memo noted that reports touching …
‹ Previous in Air Force investigations: Sign to Blue BookLakenheath-Bentwaters: radar targets and the Venom intercept13 of 16Next in Air Force investigations: Sign to Blue Book ›Socorro, New Mexico: Lonnie Zamora's landing report

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Malmstrom 1967Roswell 1947Tic Tac (FLIR1) 2004AAWSAP / AATIP 2008Socorro, New Mexico: Lonnie Zamora's landing report 1964ODNI report 2021

Connected cases

Ascension 1960 1960Catalina Island Unresolved UAP Reports 1949Washington, 1952 1952Edwards 1965 1965Fukuoka: an F-61 night fighter and the 'rifle bullet' 1948F-86D pilot outclimbed and circled by a light over Guam 1956Loch Raven 1958 1958Marcala 1950 1950Minot 1968 1968W-93 1958 1958RB-47 1957 1957Robertson Panel 1953Project Sign 1947Tremonton film 1952USS Hassayampa: four radar targets circle the ship 1965

People and organizations

Battelle Memorial Institute orgProject Moon Dust and Operation Blue Fly orgBAASS Project Management Plan for DIA (2 December 2008) documentThe 'Interplanetary Phenomenon Unit' report (22 July 1947) documentJANAP 146(C): CIRVIS and MERINT reporting (1954) documentRobert Low's 'trick' memo on the Condon study (1966) documentExploring Unidentified Aerospace Phenomena Through Instrumented Field Studies: Historical Insights, Current Challenges, and Future Directions documentTransients in the Palomar Observatory Sky Survey (POSS-I) may be associated with nuclear testing and reports of unidentified anomalous phenomena documentUAP Indications Analysis 1945-1975 United States Atomic Warfare Complex documentUAP Pattern Recognition Study 1945-1975: US Military Atomic Warfare Complex documentUAP Activity Pattern Study 1945-1975: Military and Public Activities documentEstimating Flight Characteristics of Anomalous Unidentified Aerial Vehicles documentThe new science of Unidentified Aerospace-Undersea Phenomena (UAP) documentThe Reported Shape, Size, Kinematics, Electromagnetic Effects, and Presence of Sound of Unidentified Aerial Phenomena from Select Reports, 1947-2016 documentThe Reported Shape, Size, Kinematics, Electromagnetic Effects, and Presence of Sound of Unidentified Aerial Phenomena From Select Reports, 1947-2016 document'Flying saucer talk': Ruppelt's 1952 briefing tape (MIT Lincoln Lab) document

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