Claim · G-019
David Grusch: Claims that the “weather balloon” explanation given for Roswell in 1947 was disinformation and that secrecy and disinformation about retrievals date back to 1933.
David Grusch · Jun 2023 · Interview with NewsNation with Ross Coulthart (June 2023) (Interview)
Hearsay Historical cases
Disputed
It is disputed: according to the Air Force reports of the 1990s, summarized by the GAO, the debris most likely came from a classified project (Mogul) and not from a non-human craft, so the 1947 version concealed a military secret, not a non-human retrieval; the 1933 part has no corroboration.
- In support
- The GAO (1995), summarizing the Air Force's 1994 report, writes that the debris most likely came from a balloon train of Project Mogul, a highly classified activity on Soviet nuclear research; the 1947 announcement spoke of a radar-tracking balloon (“weather”) without mentioning its secret nature.
- Against or denials
- The Air Force reports of the 1990s attribute the episode to Project Mogul and not to a non-human craft; the AARO historical report vol. 1 (2024) lists Project Mogul among the probable sources of misinterpreted sightings. A letter from General Nathan Twining of September 23, 1947, written two and a half months after the episode and released in 2026 among the PURSUE files, lists among the points to consider the lack of physical evidence in the form of specimens recovered from crashes; it cannot rule out more secret programs of which the author was not informed.
Sources
- AARO, Report on the Historical Record of U.S. Government Involvement with UAP, vol. 1 (March 8, 2024), copy on The Black Vault (primary source)
- Space.com, the AARO historical report: no empirical evidence of alien technology (March 2024) (press)
- Higgypop, summary of Grusch's claims in the NewsNation interview (published in 2025) (press)
- Letter from Gen. Nathan F. Twining of September 23, 1947, file “General 1946-7, Vol. 2,” PURSUE series 1 (PDF) (primary source)
- GAO/NSIAD-95-187 (July 28, 1995): the Air Force's 1994 report and Project Mogul (read with WebFetch: gao.gov blocks scripts) (primary source)
On this site
People 1
Claims 2
- David Grusch: Maintains that for decades a disinformation campaign has been underway to reduce public interest in the… Unverifiable
- David Grusch: Claims that the oldest case he was informed of is a craft recovered in Italy in 1933 by Mussolini's… Unverifiable
Documents 2
- The 1947 Twining letter: the phenomenon is “real,” but there are no crash-recovered exhibits Original available
- The Air Force's 1995 report on Roswell (Project Mogul) Original available
Cases 1
- Roswell: the ranch debris and the “disc” announced by the base Disputed explanation
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