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Historical caseStructured for retrospective review and comparison against modern sightings.

The only pilot fatality from a UFO intercept attempt in the FBI's archive. Captain Thomas Mantell, January 7 1948. His last radio transmission is preserved verbatim in the file the Pentagon just released.

UnknownOfficial docJan 7, 1948, 12:00 AMDayton, Ohio

Witnesses

Unknown

Duration

Unknown

Source material

2

Timeline

3

Source context

Limited context

54

Interesting, but still missing stronger corroboration or harder source material.

Source provenance

r/UFOs

Live sighting record a480ac8a-0de0-4bbd-8c5f-eba7fec76e20.

Using the selected case's real source, media, and context throughout the workspace.

Correlations

Field Intelligence

Moon phase

22% illumination

Waning crescent — moderate moon brightness

Solar window

Sunrise7:59 AM
Sunset5:28 PM
Day length9h 29m

Weather

Open-Meteo
ConditionsClear sky
Temperature27°F
Cloud cover9% · Clear
Wind13 mph

Area activity

Within 2 daysNo sightings within 60 mi

Extracted details

Observed facts

Occurred

Jan 7, 1948, 12:00 AM

Timezone

Eastern Time

Location

Dayton, Ohio

Witness account

Narrative

PURSUE Release 01 dropped 162 files. Most of the coverage went to the orb videos and the Apollo 17 photo. Buried in Section 4 of FBI case file 62-HQ-83894 (serial 62-83894-169) is a Dayton Journal-Herald clipping from April 27, 1948, preserved by the Bureau as an enclosure to a civilian letter forwarded to Hoover. It contains Captain Thomas F. Mantell's last radio transmission verbatim: "I'm closing in to take a good look. It looks metallic and of tremendous size. It's going up now as fast as...

Case progression

Timeline

Encounter windowJan 7, 1948, 12:00 AM

Witnesses place the encounter near Dayton, Ohio.

PublishedMay 13, 2026, 4:34 AM

r/UFOs carried the report into the source network.

Linked event

Grouped into the PURSUE Release incident dossier.

Ledger

Source material

source

Original report

Open

Direct source material from r/UFOs.

telemetry

Environmental pass

Historical atmosphere, astronomy, and nearby infrastructure were resolved for this case.