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About this site. The Perimeter of the Secret is an independent, evidence-based investigation of the PURSUE releases: 330 UAP records (189 documents, 27 images, 103 videos, 11 audio files) declassified by the U.S. government across four tranches in May and June 2026. Every document was read end-to-end and is presented here as curated readable scans with its full analysis; every video is embedded from, or verified against, the government's own hosting. The site takes no position beyond what the record supports, and it states its open questions as plainly as its findings.
For press and researchers. Everything on the site may be quoted with attribution ("The Perimeter of the Secret, secretperimeter.netlify.app"). The underlying government files are public records available at war.gov/ufo; the analysis layer, ratings, clusters, and cross-references are this site's own work. Corrections are welcome and are logged publicly on the Updates page. How the investigation was conducted, including the role of AI in it, is documented on How This Was Made.