War.gov PURSUENASA
GovernmentJune 3-7, 1965Analysis complete

NASA-UAP-D018: Gemini 4 Experiment Debriefing, 1967

This released document records that the G4C suit has new features including a triple lens shield for visual, thermal, impact, and micrometeorite protection. The file preserves the source account or analysis but does not independently establish interpretations beyond the cited record. This document is useful as an officially released artifact because it preserves the file's provenance and lets its claims be compared with related Release 03 records.

File
Document · Release 03
Date
June 3-7, 1965
Location
Low Earth Orbit
Extent
224 pages

Probed Assessment

This released document records that the G4C suit has new features including a triple lens shield for visual, thermal, impact, and micrometeorite protection. The file preserves the source account or analysis but does not independently establish interpretations beyond the cited record.

Key takeaways

  • The source states that the G4C suit has new features including a triple lens shield for visual, thermal, impact, and micrometeorite protection.
  • The source states that the Gemini IV mission was intended to further demonstrate manned space flight for a period of four days.
  • The source states that the Office of Public Affairs publishes a comprehensive series of pre-launch and post-launch reports on NASA flight missions which are available for general distribution.

Why it matters

This document is useful as an officially released artifact because it preserves the file's provenance and lets its claims be compared with related Release 03 records.

Corroboration

The release metadata and stored source material corroborate the file's provenance. Reported sightings, interpretations, and allegations remain attributed to the source unless independently supported by the cited evidence.

Open questions

  • What additional contemporaneous records or independent evidence could test the source account?

Probed separates this editorial assessment from the source claims below. It summarizes what the released artifact supports; it is not independent verification.

Official Description from War.gov

Gemini IV was the second crewed mission of the Gemini series. Astronauts James McDivitt and Edward White successfully completed the four-day flight between June 3 and June 7, 1965. The mission included the first American spacewalk. This collection of documents contains a transcription of the astronauts recounting their observations of bright particles outside the spacecraft, dated circa June 25, 1967, on pages 78-81, and page 101.

Preserved verbatim as source metadata. This wording is separate from Probed’s file-specific description and assessment.

File Context

Related entities

13

Release provenance

Release
Release 03
Official ID
release-03-file-064-nasa-uap-d018-gemini-4-experiment-debriefing-1967
Cleared
Jun 12, 2026
Official release source

Referenced Timeline

  1. Page 8

    Launch of Gemini IV

    The Gemini IV mission was launched from Complex 19 at the John F. Kennedy Space Center.

  2. Page 2

    Completion of Gemini IV mission

    The Gemini IV mission was completed after a four-day flight.

    LinkedGemini IV
  3. Page 79

    Astronauts recount observations of bright particles

    Astronauts recounted their observations of bright particles outside the spacecraft.

Source Claims

Claims are attributed to the released source and remain distinct from Probed’s assessment and tracker findings.

Source reportedObservedPage 4

The G4C suit has new features including a triple lens shield for visual, thermal, impact, and micrometeorite protection.

The G4C suit has the following new features: a. Helmet -incorporation of triple lens shield (visors) for visual, thermal, impact, and micrometeorite protection.

Source reportedObservedPage 11

The Gemini IV mission was intended to further demonstrate manned space flight for a period of four days.

This GT-4 mission is intended to further demonstrate manned space flight for a period of four days, the longest ever flown by two astronauts.

LinkedGemini IV
Source reportedAssertedPage 10

The Office of Public Affairs publishes a comprehensive series of pre-launch and post-launch reports on NASA flight missions which are available for general distribution.

The Office of Public Affairs publishes a comprehensive series of pre-launch and post-launch reports on NASA flight missions which are available for general distribution.

Source reportedObservedPage 8

Because the duration of the flight is one of the most significant aspects of their mission, the post- flight activities will involve expanded medical evaluation as compared with previous missions, including at least 24 hours aboard the recovery aircraft carrier, the USS WASP.

Because the duration of the flight is one of the most significant aspects of their mission, the post- flight activities will involve expanded medical evaluation as compared with previous missions, including at least 24 hours aboard the recovery aircraft carrier, the USS WASP.

LinkedUSS Wasp
Source reportedObservedPage 3

Over Hawaii, at daybreak, near the end of the second orbit, the cabin will be depressurized and Jim McDivitt will maneuver to within close proximity of the booster.

Over Hawaii, at daybreak, near the end of the second orbit, the cabin will be depressurized and Jim McDivitt will maneuver to within close proximity of the booster.

Source reportedObservedPage 12

The GLV, on sata SEPARATE, TURN AROUND, the other hand, uses self-igniting £ fuels which, upon mixing, create a fireball small enough so that the pieates astronauts can eject from the | spacecraft in much the same man- a 5 MIN.

The GLV, on sata SEPARATE, TURN AROUND, the other hand, uses self-igniting £ fuels which, upon mixing, create a fireball small enough so that the pieates astronauts can eject from the | spacecraft in much the same man- a 5 MIN.

Source reportedObservedPage 105

(The only thing that)bothers me Just a little bit is you saying because Gordo said he could — he woke up in the daylight — pointed at the sky, he could tell whether it was day or night, and therefore it was an airglow.

(The only thing that)bothers me Just a little bit is you saying because Gordo said he could — he woke up in the daylight — pointed at the sky, he could tell whether it was day or night, and therefore it was an airglow.

Source reportedObservedPage 120

on the average from to altitude Regardless of their brightness/meteors appear kx 40 and 60 miles/in the earth's atmosphere, Bright meteors are seen to reach about 40 miles, whereas immixkkx large fireballs may still be seen as low as 20 miles or so.

on the average from to altitude Regardless of their brightness/meteors appear kx 40 and 60 miles/in the earth's atmosphere, Bright meteors are seen to reach about 40 miles, whereas immixkkx large fireballs may still be seen as low as 20 miles or so.

Source reportedObservedPage 28

Real time tracking and the acqui- sition of data for post flight evaluation will be provided by optical and photo- graphic systems, MISTRAM, GE Mod III radar, C-band radar, and the Impact Predictor (IP) 7094.

Real time tracking and the acqui- sition of data for post flight evaluation will be provided by optical and photo- graphic systems, MISTRAM, GE Mod III radar, C-band radar, and the Impact Predictor (IP) 7094.

Source reportedObservedPage 30

The GT-4 mission employs a zone concept for recovery which estab- lishes four recovery zones: East Atlantic, West Atlantic, West Pacific and Mid- Pacific.

The GT-4 mission employs a zone concept for recovery which estab- lishes four recovery zones: East Atlantic, West Atlantic, West Pacific and Mid- Pacific.

Source reportedObservedPage 18

MSC-1, Electrostatic Charge Before rendezvous missions are attempted, an investigation must be made of the possibility of inadvertent ignition of pyrotechnics and other detri- mental effects due to discharge of electrostatic charge potentials during rendezvous.

MSC-1, Electrostatic Charge Before rendezvous missions are attempted, an investigation must be made of the possibility of inadvertent ignition of pyrotechnics and other detri- mental effects due to discharge of electrostatic charge potentials during rendezvous.

Source reportedObservedPage 22

In this capacity he prepared and delivered academic lectures and simulator briefings, and flight test brief- ings on the theory and practice of spacecraft testing.

In this capacity he prepared and delivered academic lectures and simulator briefings, and flight test brief- ings on the theory and practice of spacecraft testing.

Source reportedObservedPage 132

They have already been granted permis- sion to continue their journey for another day and Gemini officials see no current prob- lems that might foreshorten an eight-day mission.

They have already been granted permis- sion to continue their journey for another day and Gemini officials see no current prob- lems that might foreshorten an eight-day mission.

LinkedGemini IV
Source reportedObservedPage 168

= resent plans call for ten manned Cemini missions Spaced three months apart, beginning in the last quarter of Calendar Year 1964, Overall responsibility for manned space science investigations is assigned to Mr.

= resent plans call for ten manned Cemini missions Spaced three months apart, beginning in the last quarter of Calendar Year 1964, Overall responsibility for manned space science investigations is assigned to Mr.

Source reportedAssertedPage 173

I went to congratulate you on the fine reports you have been submitting for your S-13 experiment and especially the document entitled “Definitive Plan." The full documentation of your experiment is very important and I em gled to see you are keeping up with thet.

I went to congratulate you on the fine reports you have been submitting for your S-13 experiment and especially the document entitled “Definitive Plan." The full documentation of your experiment is very important and I em gled to see you are keeping up with thet.

Source Material & Evidence

document

Mission Operation Report No. M-913-65-04

M-913-65-04

image

Figure 1: Physical differences between G3C and G4C suits

image

Figure 4: Multivarious layers of materials in the EVA G4C suits

image

Figure 5: Zero g Integral Propulsion (ZIP) Unit

Research Map

13 entities · 1 grounded link

Lines appear only when two entities share a row-level source claim or dated timeline event. Unconnected nodes remain visible without implying a relationship.

UAP/Disclosure Graph
13 nodes1 links