Overview
A circulating claim that former U.S. intelligence officer David Grusch may have identified an evidence trail involving alleged underwater UFO bases rests largely on congressional records and interpretations of those records—not on publicly verified evidence of submerged facilities or nonhuman technology. The argument points to two alleged public interrogatories issued by the office of Representative Eric Burlison, a Missouri Republican, to MIT Lincoln Laboratory and MITRE, organizations that have worked on defense and national-security research.
The source material available for review, however, does not establish the existence of those bases. The cited document, identified as a press-related PDF on Burlison’s congressional website and dated January 23, 2023, currently returns a 404 “Page Not Found” error. The incomplete text supplied with the claim contains no questions, responses, attachments or authenticated correspondence that would allow the allegations to be independently assessed.
What the Claim Says
According to the post’s interpretation, Grusch may have pointed investigators toward a specific file or record connected to underwater UAP activity. That file was allegedly sought through congressional inquiries directed to MIT Lincoln Laboratory and MITRE. The proposed chain of events is therefore indirect: Grusch is said to have identified a lead, and lawmakers or investigators are believed to have pursued records associated with it.
That distinction is important. An interrogatory, request for information or congressional inquiry can demonstrate that lawmakers are investigating a subject; it does not, by itself, confirm the underlying allegation. Without the original documents, a clear chain of custody and corroborating testimony or technical data, it is not possible to determine whether the referenced file concerned an actual incident, an intelligence report, a historical research project, a mistaken identification or another unrelated matter.
Congressional and UAP Context
Burlison has been among the lawmakers publicly pressing for greater transparency regarding unidentified anomalous phenomena, commonly known as UAP. Such efforts have taken place amid broader congressional interest in claims that the U.S. government has concealed information about unusual objects and alleged crash-retrieval programs.
Grusch, a former member of the UAP-related intelligence task force, told Congress in 2023 that he had been informed of a long-running program involving the recovery and analysis of objects of nonhuman origin. He also said some information was withheld from him and other officials. He did not publicly present verifiable physical evidence during his testimony, and many of the claims he described were based on information provided by other individuals. The public record does not independently substantiate a network of underwater bases.
Evidence Still Missing
The lack of an accessible source is especially significant because the claim depends on precise details: what Grusch allegedly identified, when he identified it, which office requested the material and how MIT Lincoln Laboratory or MITRE responded. Neither organization’s purported response is included in the supplied material. Nor is there publicly documented imagery, sensor data, site information or engineering evidence demonstrating the existence of underwater UAP installations.
For now, the underwater-base theory should be treated as an unverified investigative claim rather than an established discovery. Locating an archived copy of the Burlison documents, obtaining any agency or contractor responses and independently confirming the provenance of the alleged file would be necessary before drawing stronger conclusions. Until then, the available evidence shows that questions may have been raised—not that underwater UFO bases have been found.
