The first pages of the declassified US file on the COMETA report are not the report. They are a cover letter. Dated April 30, 2001, on Ventura, California letterhead, it opens "Hi Dan" and reads like a note between friends: an actor husband who sang "The Impossible Dream" on Broadway, a lunch invitation, a promise that whatever is in the package "won't cost you or NASA a dime." The writer is Carol Rosin, who notes she was "spokesperson for von Braun during the last years of his life" and that she founded the Institute for Security and Cooperation in Outer Space in 1983. The package she was hand-delivering to a NASA contact turns out to be an English translation of a French document called "UFOs and Defense: What Should We Prepare For?"
That is UFOP-12 in the archive, catalogued as a NASA record, tier 3, partially redacted. It is worth being clear about what the US government did with it, which is: filed it. There is no American analysis attached, no assessment, no cover memo from an agency. The US holding is a photocopy of a private French study plus the personal letter that carried it in the door. Everything of substance in the file was written in France.
What COMETA was
The report first appeared in July 1999 as a special issue of the French magazine VSD. COMETA stands for Committee for In-Depth Studies, a private group assembled mostly from former auditors of the Institut des Hautes Etudes de Defense Nationale, France's advanced national defense studies institute. The membership list in the file is heavy with rank: Air Force generals of the 2nd Section, a weapons engineer general, an admiral, a chief of police, doctors of physics and political science. It was chaired by Air Force General Denis Letty. The foreword is by Andre Lebeau, former chairman of the Centre National d'Etudes Spatiales, France's space agency.
Lebeau's foreword sets the tone. He compares UFOs to meteorites, which science long dismissed as "the stuff of fable" until a witnessed fall over the town of Laigle made them collective and indisputable. His point is procedural: a phenomenon that is rare and discrete, with little evidence at each occurrence, sits outside science until the observations pile up. The report, he writes, "contributes toward stripping the phenomenon of UFOs of its irrational layer." In his preface, General Bernard Norlain adds that this is "not a purely academic study," that "concrete problems are raised" for civilian and military pilots that "call for a response in terms of action." Letty's own preface is blunter: the accumulation of well-documented sightings by credible witnesses "forces us to consider from now on all of the hypotheses," the extraterrestrial one "in particular."
France had institutional standing to say this. The report traces a lineage back to a 1976 IHEDN committee whose recommendations led to the creation of GEPAN inside CNES, later renamed SEPRA. That makes France, per the report, home to "the only civilian government agency known in the world dedicated to the study of UFOs." Several of the cases in the file came out of GEPAN/SEPRA investigations.
The pilot cases
The report's Part 1 leads with three French pilots who testified before the committee. On March 7, 1977, a Mirage IV pilot named Herve Giraud, returning to Luxeuil on autopilot at 9,600 meters, saw a bright glow closing on a collision course. He banked hard, up to 3 to 4 g, trying to keep it in sight; it slipped behind him at an estimated 1,500 meters. It vanished, then a second identical glow appeared. The radar controller had no contact on his scope and asked the crew to check their oxygen, a standard emergency prompt that, the report notes, means the controller suspected a hallucination. No sonic boom was heard, which the committee flags because any craft matching those maneuvers should have made one.
The second pilot, later named as Colonel Claude Bosc, was a student on a solo night flight in a T-33 on March 3, 1976. What he first took for a green signaling flare crossed above his altitude, leveled off, then descended straight at him and filled the windshield. He let go of the stick and crossed his arms over his face. A sphere one to two meters across, trailing a comet-like green tail with a magnesium-white center, grazed past his right wing. Two other pilots on the same route saw it from a distance.
The third is the one with a paper trail. On January 28, 1994, Air France flight AF 3532 out of Nice saw an object near Coulommiers that shifted from a brown bell shape to a chestnut lens before disappearing. The captain reported it, and the Taverny air defense center found a radar track that crossed the flight's path, was recorded for 50 seconds, matched no filed flight plan, and vanished from the scopes at the same instant it left the crew's view. Working from the crossing distance, investigators put the object's length at roughly 250 meters.
The radar cases the US knows
Part of what makes COMETA readable in an American archive is that several of its strongest cases are American. It cites Lakenheath, the joint USAF-RAF base in England, on the night of August 13-14, 1956, where radar and ground observers tracked an object making abrupt stops and accelerations from zero to hundreds of kilometers per hour. The regulation telex Lakenheath sent to Project Blue Book that day concluded that "the fact that radar and ground visual observations were made on its rapid acceleration and abrupt stop certainly lend credence to the report." The Condon Commission, which the US Air Force tasked with evaluating its UFO research, listed the case as unidentified.
The report gives similar weight to the RB-47 incident of July 17, 1957, over the south-central United States, where a converted bomber's electronic-intelligence operators detected a pulsed microwave source that paced the aircraft while ground radar at "Utah" near Dallas held it at a constant 18-kilometer distance. It also cites Tehran, September 18-19, 1976, where two Iranian F-4 Phantoms lost instruments and communications as they closed on an object, one at the moment its pilot tried to fire a missile. The Defense Intelligence Agency's own note on that report, quoted in the file, called it "an outstanding report" and "a classic which meets all the criteria necessary for a valid study of the UFO phenomenon."
Ground and close-range
The report does not stop at radar. It records a Soviet air defense commander, General Igor Maltsev, summarizing over a hundred sightings from March 21, 1990, of a disk 100 to 200 meters across that seemed "completely devoid of inertia," as if it had "come to terms with gravity." It logs a 1979 sighting near Dijon by Mirage III pilot Jean-Pierre Fartek, who with his wife watched two superposed saucers, metallic gray above and bluish below, hovering three meters over a field, oscillating slightly, silent, leaving no trace. That case, and the 1965 Valensole encounter where farmer Maurice Masse said he was paralyzed near a landed object on six legs, are the kind of saucer-shaped, close-range reports the archive collects under disc and saucer sightings.
What it recommends, and what it does not settle
The introduction lays out where the report is going without overselling it. The committee promises to review "the principal global explanations proposed," which "range from secret weapons to extraterrestrial manifestations," and to weigh "the strategic, political, and religious consequences of a possible confirmation of the extraterrestrial hypothesis." Its recommendations, per the table of contents and introduction, are practical: give pilots enough information to know how to behave when they encounter one of these, expand SEPRA's work, and pursue international cooperation. An appendix is titled "The Roswell Affair - Disinformation." The report keeps its belief and its evidence in separate columns, as Lebeau's foreword insists a scientist should: what a researcher believes drives the work but "is not important to the results."
That restraint is the reason the document reads oddly next to how it usually gets summarized online, where COMETA becomes shorthand for "French generals concluded UFOs are alien." The file does not say that. It says a private committee of senior officers found the evidence strong enough to warrant taking every hypothesis seriously, including the extraterrestrial one, and to prepare for the operational and strategic problems either way.
The American footnote is that none of this is American. This is one of 40 NASA records in the archive, and the agency's contribution to the COMETA question was to accept a package from Carol Rosin and keep it. If you want to read the French committee's own words rather than a paraphrase, the extracted text is on the UFOP-12 page, sitting in the wider NASA collection alongside the shuttle and Apollo material. A note on the seams and redactions to watch for is in how to read these documents.