The largest file in PURSUE is the CIA's own U-2 and OXCART history
CIA-UAP-003 — at roughly 720 MB the single biggest PDF in any PURSUE release — is the CIA's internal history of the U-2 and OXCART (A-12 / SR-71) reconnaissance programs from 1954 to 1974. This is the document that long established that many Cold War UFO sightings were classified overflights. Its inclusion under PURSUE is the official acknowledgement of that overlap.
This file isn't new — versions of it have been declassified for years and the original was famously released by the CIA in 2013 as part of Operation HABRINK. What's new is that the *Department of War* in 2026 has re-released it specifically under a UFO disclosure venue, with a UAP record ID assigned ("CIA-UAP-003"). That's the Pentagon formally endorsing the explanation that has always been controversial inside UFO communities: that the U-2 and SR-71 are responsible for a non-trivial share of historical Cold War UFO reports.
By the numbers
Evidence
Catalog row: CIA-UAP-003-THE_CENTRAL_INTELLIGENCE_AGENCY_AND_OVERHEAD_RECONNAISSANCE-THE_U-2_AND_OXCART_PROGRAMS_1954-1974
File path: medialink/ufo/061226/release_03/documents/CIA-UAP-003-THE_CENTRAL_INTELLIGENCE_AGENCY_AND_OVERHEAD_RECONNAISSANCE-THE_U-2_AND_OXCART_PROGRAMS_1954-1974.pdf
Size: ~720 MB. By comparison the second-largest file in release 3 (CIA-UAP-015, Project Blue Book Special Report No. 14) is ~80 MB. The mean release-3 PDF is ~3 MB. This one file accounts for about 80% of release 3's total document bundle weight.
Why it's relevant to UFOs. The U-2 (CIA, 1955+) flew at 70,000 ft. The A-12 / OXCART (CIA, 1962+) cruised at 90,000 ft at Mach 3+. The SR-71 (USAF successor, 1966+) flew the same envelope. Until SR-71 retirement in 1989, the U-2 and successors flew higher than any aircraft civilian observers thought was possible. A *significant fraction* of 1950s–80s "high-altitude UFO" reports — silver dots crossing the sky at unbelievable speeds, no engine noise — are explained by this single document.
The CIA's own 1998 acknowledgement (in *Studies in Intelligence*, the in-house journal) put a number on it: that *over half* of UFO reports between the mid-1950s and the mid-1960s were "of U-2 or OXCART flights." That number has been repeated in every serious UFO history since.
Why republishing it under PURSUE matters.
1. The Department of War assigning it a UAP record ID is the Pentagon's first formal classification of this document as primary UFO source material since AARO was established. 2. Release 3 is heavily *historical* — 18 CIA Cold War files, plus 1940s DoW Flying Saucer Studies (D084 Army 1949, D086 Navy 1948), plus J. Edgar Hoover correspondence from 1949. The U-2/OXCART history fits that frame: PURSUE is reclassifying the Cold War overflight programs as part of the UFO record. 3. Releasing it via PURSUE rather than the CIA's own FOIA reading room (where it's been since 2013) gives it a UAP-context filename, a UAP-context catalog entry, and inclusion in the DoW's master UFO manifest.
To download: the file is huge. Either the release-3 documents bundle (826 MB total — see [bundles](/bundles)) or this specific PDF at www.war.gov/medialink/ufo/061226/release_03/documents/CIA-UAP-003-THE_CENTRAL_INTELLIGENCE_AGENCY_AND_OVERHEAD_RECONNAISSANCE-THE_U-2_AND_OXCART_PROGRAMS_1954-1974.pdf. We mirror it locally; we recommend not inlining it on a record page (use a download link only).