NASA · NASA-UAP-D016
Gemini IV Crew Debriefing Part 1, the Tumbling Booster and the Fireflies (1965)
This is Part 1 of the preliminary GT-4 (Gemini IV) flight crew debriefing transcript, made from voice tape of the debriefing of James McDivitt and Edward White aboard the recovery ship USS Wasp on 9 June 1965. Part 1 covers the mission "from an operational viewpoint" (countdown, powered flight, station-keeping, EVA, reentry, recovery); its UAP relevant content is the crew's attempt to keep station with their own spent, tumbling Titan II second stage amid clouds of "fireflies," which the crew describe in operational detail as fuel and waste particles.
Key excerpts
“About the same time I realized I was looking out at the fire flies everybody had s[e]en, but probably in a much more profuse quantity than had ever been seen before, because we were getting all this fuel that was vaporizing into many, many particles from the booster and a little bit of a contribution from the spacecraft also. (lines 2640 to 2651)”
“As soon as we got turned around I could see t[h]at the lights were flashing on the booster, and Ed saw them, too. (lines 2691 to 2695)”
“We had two lights on the booster that flashed and they were diametrically opposed on the center of the booster. (lines 2749 to 2752)”
Alternative hypotheses
Known hardware and its debris field
the documented situation, effectively certain).
Fuel and waste particles
the "fireflies") as an optical effect.
An unexplained object
not supported).