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E-006302LANDMARK CASE · HIGH CORROBORATIONDATE PRECISION: exactRECORD COMPLETENESS: 100%

Rapid City F-84 Radar-Visual Intercept

August 12, 1953Rapid City area, South Dakota, United States

Hall summarizes an incident beginning with a hovering light reported by the Ground Observer Corps, followed by ground-radar tracking and two F-84 pursuits. The second pilot reportedly obtained radar lock/ranging while the target remained ahead and later continued north.

// LINKED CLASSIFICATIONS:Scientific & Observational Types(P-000101)→
Claims are displayed with the source wording, locator, relationship and verification state. Competing claims remain separate rather than being averaged into a single answer.
SOURCE COMPARISON

Encounter · Reported Encounter Observation

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CLAIM-689012reported
“Hall states that ground radar and two F-84 pursuits tracked a target that moved ahead when the jets closed; the second pilot reportedly obtained a radar lock/ranging indication and ground observers farther north later saw a light moving north.”
The UFO Evidence
SRC-002107 · Rapid City radar/visual intercept; uploaded PDF pp. 17-18
SUPPORTS
SOURCE COMPARISON

Encounter · Investigation Source Caveat

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CLAIM-689013reported
“Hall cites a 1958 Air Force reply saying radar-scope photographs and gun-camera photographs were made but were not sufficiently clear for evaluation and that the Ellsworth case remained unknown/unsolved.”
The UFO Evidence
SRC-002107 · Air Force unknown/unsolved disposition; uploaded PDF pp. 18-18
SUPPORTS
SOURCE COMPARISON

The UFO Evidence (1964) Selected Case Corpus · Hall / NICAP Corpus Method

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CLAIM-689001reported
“The Abstract says NICAP selected 740 reports after considering more than 5,000 signed reports and many hundreds of reports from newspapers and other publications, emphasizing observer qualifications and multiple-observer cases.”
The UFO Evidence
SRC-002107 · Selection method and 740-report figure; uploaded PDF pp. 3-3 · PRIMARY SOURCE
SUPPORTS
CLAIM-689002reported
“Later in the Introduction Hall says the report contains 746 sightings: 575 in the main chronology and 171 in separate concentration chronologies.”
The UFO Evidence
SRC-002107 · 746-sighting total and chronology breakdown; uploaded PDF pp. 8-8 · PRIMARY SOURCE
SUPPORTS
CLAIM-689003reported
“Hall states that 50% of the 575 main-chronology cases involved trained or experienced observers.”
The UFO Evidence
SRC-002107 · Trained/experienced observer statistic; uploaded PDF pp. 8-8 · PRIMARY SOURCE
SUPPORTS
Multiple claim rows are intentionally retained when sources disagree. ANOMALY does not silently reconcile competing values.
SOURCE COMPARISON

The UFO Evidence (1964) Selected Case Corpus · Investigation Source Caveat

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CLAIM-689004reported
“NICAP explicitly distinguishes its physical-UFO investigation from contactee, religious, philosophical, and spiritual claims and says its investigations found no evidence supporting claimed rides in flying saucers, while alleging considerable fraud in that area.”
The UFO Evidence
SRC-002107 · NICAP scope and contactee/fraud disclaimer; uploaded PDF pp. 4-5 · PRIMARY SOURCE
SUPPORTS