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How Officials Picked the KC 97 Crash

The Air Force narrowed Walker-area accidents by asking whether remains were burned, taken to the hospital, and autopsied.

On this page

  • The three criteria used to compare fatal accidents
  • Why other Walker AFB accidents were rejected
  • What the filtering method proves and does not prove
Preview for How Officials Picked the KC 97 Crash

Introduction

When the U.S. Air Force revisited Roswell body-recovery claims in its 1997 report The Roswell Report: Case Closed, investigators did not simply search for any fatal accident near Roswell. They developed a filtering test aimed at identifying real events that could plausibly have generated later stories about bodies, autopsies, and unusual activity at the Roswell Army Air Field hospital. The goal was to separate documented military incidents from later legend-building and to determine whether witness accounts contained details that matched actual events rather than an alleged extraterrestrial crash. [U.S. Department of War]media.defense.govAFD 101027 030Department of WarU.S. Air Force: "The Roswell Report: Case Closed"It appears that UFO proponents have failed to establish the accurate da…

Filtering Test illustration 1 The Air Force’s approach was narrow and practical. Instead of asking whether an accident occurred near Roswell, researchers asked whether it involved the specific elements repeatedly described in body-recovery stories: severely damaged human remains, transport to a military hospital, and post-mortem examinations. That screening process ultimately led investigators to focus on the 1956 KC-97 crash rather than other accidents associated with Walker Air Force Base. [U.S. Department of War]media.defense.govAFD 101027 030Department of WarU.S. Air Force: "The Roswell Report: Case Closed"It appears that UFO proponents have failed to establish the accurate da…

Filtering Test illustration 3

The Three Criteria Used to Compare Fatal Accidents

The Air Force faced a problem common to historical investigations: many accidents had occurred around Roswell, but only a few resembled the narratives later attached to the Roswell legend.

Researchers therefore examined documented incidents against three recurring features found in witness stories:

  1. Were the victims badly burned or otherwise difficult to identify?
  2. Were the remains taken to the base hospital?
  3. Were autopsies or formal examinations performed?

These criteria emerged because the most influential body-story accounts involved descriptions of unusual corpses, mortuary inquiries, hospital activity, body transport, and examinations after death. Investigators reasoned that if a real event inspired such memories, it should leave a documentary trail matching those characteristics. [U.S. Department of War]media.defense.govAFD 101027 030Department of WarU.S. Air Force: "The Roswell Report: Case Closed"It appears that UFO proponents have failed to establish the accurate da…

The 1956 KC-97 tanker crash met all three conditions. According to the Air Force report, the aircraft was destroyed by fire after a catastrophic propeller failure. The remains of the eleven airmen were burned, recovered by military personnel, taken to the Walker AFB hospital for identification work, and subjected to autopsy procedures. The identification effort was difficult enough that specialists were brought in and some work was moved to refrigerated facilities because of the condition of the remains. [Project Gutenberg]gutenberg.orgProject Gutenberg The Roswell Report: Case Closed, by James Mc Andrew—alien bodies associated with the “Roswell Incident.” Pursuant to the… duty I considered unusual or that might explain reports of bodie…

From the perspective of the filtering test, that combination was significant because it reproduced many of the practical details that later appeared in Roswell body narratives without requiring any extraterrestrial explanation. [U.S. Department of War]media.defense.govAFD 101027 030Department of WarU.S. Air Force: "The Roswell Report: Case Closed"It appears that UFO proponents have failed to establish the accurate da…

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Why Other Walker AFB Accidents Were Rejected

The Air Force did not argue that every accident near Roswell contributed to UFO stories. Rather, the filtering process excluded incidents that failed one or more of the key criteria.

Many aircraft accidents produced fatalities but lacked the distinctive chain of events described in hospital-based Roswell accounts. Some involved deaths without extensive recovery and identification procedures. Others did not generate reports of remains being transported through the base hospital system or subjected to the sort of examinations later described by witnesses. Still others occurred under circumstances that did not involve severely burned bodies or the unusual handling measures that became central to later stories. [U.S. Department of War]media.defense.govAFD 101027 030Department of WarU.S. Air Force: "The Roswell Report: Case Closed"It appears that UFO proponents have failed to establish the accurate da…

The Air Force’s broader investigation also concluded that body-related Roswell claims were not connected to the 1947 Project Mogul debris recovery. Researchers stated that Mogul equipment could not have carried passengers and that no evidence showed the Army Air Forces conducting body-recovery operations in the Roswell area during the period associated with the original debris incident. As a result, accidents and operations from later years became the focus of comparison instead. [U.S. Air Force]af.milU.S. Air ForceThe Roswell Report… crash and recovery of an extraterrestrial vehicle and its alien occupants near Roswell, N.M….. ali…

This process substantially narrowed the field. Rather than treating every crash as a possible source, investigators concentrated on events whose documented aftermath resembled the specific details contained in witness recollections.

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Filtering Test illustration 2

What the Filtering Method Proves and Does Not Prove

The filtering test was designed to identify plausible historical sources for later stories. It was not designed to prove exactly how any particular witness formed a memory or whether every detail in a Roswell account came from a single event.

What the method does show is that at least one documented accident near Roswell contained a combination of elements often presented as mysterious: burned bodies, transport to the military hospital, outside specialists, identification difficulties, and autopsies. Those features existed in the historical record independent of any claim about alien bodies. [Project Gutenberg]gutenberg.orgProject Gutenberg The Roswell Report: Case Closed, by James Mc Andrew—alien bodies associated with the “Roswell Incident.” Pursuant to the… duty I considered unusual or that might explain reports of bodie…

What the method does not demonstrate is that every witness was remembering the KC-97 crash, that all body stories originated from that accident, or that memory contamination can be proven in a specific individual case. The Air Force argument was fundamentally one of plausibility and comparison. Investigators proposed that accounts collected decades after the fact may have blended memories of multiple events that occurred around Roswell over many years, including the KC-97 disaster and other later incidents discussed elsewhere in the report. [U.S. Air Force+2Project Gutenberg]af.milU.S. Air ForceThe Roswell Report… crash and recovery of an extraterrestrial vehicle and its alien occupants near Roswell, N.M….. ali…

As a governance and investigative technique, the filtering test served a limited purpose: it reduced a large pool of possible explanations to a small number of documented events whose characteristics matched the claims being examined. Whether one accepts the Air Force’s ultimate conclusions or not, the significance of the method lies in its attempt to compare legend details against verifiable records rather than treating all Roswell body stories as a single undifferentiated narrative. [U.S. Department of War]media.defense.govAFD 101027 030Department of WarU.S. Air Force: "The Roswell Report: Case Closed"It appears that UFO proponents have failed to establish the accurate da…

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Endnotes

  1. Source: media.defense.gov
    Title: AFD 101027 030
    Link: https://media.defense.gov/2010/Oct/27/2001330219/-1/-1/0/AFD-101027-030.pdf
    Source snippet

    Department of WarU.S. Air Force: "The Roswell Report: Case Closed"It appears that UFO proponents have failed to establish the accurate da...

  2. Source: gutenberg.org
    Title: Project Gutenberg The Roswell Report: Case Closed, by James Mc Andrew—
    Link: https://www.gutenberg.org/files/63659/63659-h/63659-h.htm
    Source snippet

    alien bodies associated with the “Roswell Incident.” Pursuant to the... duty I considered unusual or that might explain reports of bodie...

  3. Source: af.mil
    Link: https://www.af.mil/The-Roswell-Report/
    Source snippet

    U.S. Air ForceThe Roswell Report... crash and recovery of an extraterrestrial vehicle and its alien occupants near Roswell, N.M..... ali...

  4. Source: history.com
    Title: u s air force reports on roswell
    Link: https://www.history.com/this-day-in-history/june-24/u-s-air-force-reports-on-roswell
    Source snippet

    U.S. Air Force reports on Roswell | June 24, 1997On June 24, 1997, US Air Force officials release a 231-page report dismissing long-stand...

    Published: June 24, 1997

  5. Source: sgp.fas.org
    Link: https://sgp.fas.org/othergov/roswell.html
    Source snippet

    Report on Roswell, NM UFO CrashOn July 8, 1947, the Roswell Army Air Field (RAAF) public information office in Roswell, New Mexico, repor...

    Published: July 8, 1947

Additional References

  1. Source: aviation-safety.net
    Title: The blade slashed through the fuselage and hit the refueling tanks
    Link: https://aviation-safety.net/wikibase/334676
    Source snippet

    Aviation Safety NetworkAccident Boeing KC-97G Stratofreighter 52-2700, Tuesday...The KC-97G air tanker lost a blade of the no.2 prop on...

  2. Source: blogs.library.unt.edu
    Title: 75 years after the roswell incident what have we learned
    Link: https://blogs.library.unt.edu/sycamore-stacks/2022/07/07/75-years-after-the-roswell-incident-what-have-we-learned/
    Source snippet

    unt.edu75 Years after the Roswell Incident, What Have We Learned?7 Jul 2022 — Ewing flying what was suspected to be alien remains or UFO...

  3. Source: librivox.org
    Title: the roswell report case closed by james mcandrew
    Link: https://librivox.org/the-roswell-report-case-closed-by-james-mcandrew/
    Source snippet

    The Roswell Report: Case Closed11 Feb 2021 —... alien bodies associated with the “Roswell Incident.” This report discusses the results o...

  4. Source: leonarddavid.com
    Title: roswell rebuke ufo symbol patches in the past
    Link: https://www.leonarddavid.com/roswell-rebuke-ufo-symbol-patches-in-the-past/
    Source snippet

    Roswell Rebuke: UFO Symbol Patches in the Past9 Mar 2024 — The alleged “alien” bodies reported by some in the New Mexico desert, the Air...

  5. Source: time.com
    Title: aliens or [dummies]({{ ‘dummies/’ | relative_url }})
    Link: https://time.com/archive/6930414/aliens-or-dummies/
    Source snippet

    23 Jun 1997 — According to “The Roswell Report, Case Closed,” life-sized latex and aluminum test dummies were used in high-altitude parac...

  6. Source: youtube.com
    Link: https://www.youtube.com/watch?v=tCr9ft4yWaI
    Source snippet

    The Roswell Incident Mystery Finally Solved...

  7. Source: Wikipedia
    Title: Roswell incident
    Link: https://en.wikipedia.org/wiki/Roswell_incident
    Source snippet

    Roswell incidentIn 1994, Randle and Schmitt authored another book, The Truth About the UFO Crash at Roswell which claimed a cargo plan...

  8. Source: britannica.com
    Title: Roswell incident
    Link: https://www.britannica.com/event/Roswell-incident
    Source snippet

    Overview, Theories, Hoaxes, & Facts8 May 2026 — News •. Trump's new 'Aliens' website exploits UFO intrigue to demean immigrants...Read more...

    Published: May 2026

  9. Source: dafhistory.af.mil
    Title: AFD 101201 038
    Link: https://www.dafhistory.af.mil/Portals/16/documents/AFD-101201-038.pdf
    Source snippet

    Roswell Reportthat explain the events of July 1947 leading to what is popularly known as the Roswell. Incident.... alien beings and elus...

    Published: July 1947

  10. Source: youtube.com
    Title: Museum Unveils Declassified Roswell Artifact
    Link: https://www.youtube.com/watch?v=JkFjUhLONms
    Source snippet

    Ross Coulthart weighs in on 'Roswell Incident' video | NewsNation Prime...

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