A technical compilation, not a case file
Some declassified reports read like an investigation with a beginning, middle, and end. This one does not. “HAVE CARGO Captive Flight Tests, Phase III, Volume IV” is a 154-page, 53-megabyte document produced by the U.S. Air Force’s Foreign Technology Division, the office responsible for assessing foreign weapons and the systems built to counter them. It is dated August 1974. Researcher John Greenewald posted the declassified file to The Black Vault on November 25, 2024. Between those two dates lies a fifty-year gap in which the record says nothing about its own path to release; the file gives no declassification date and no case or file number. That is a fact about the paperwork, not a fact about what the tests found.
Four programs under one cover
“Captive flight tests” is a term of art: the missile’s guidance seeker is carried aloft and monitored, not fired, so its response to a target and its countermeasures can be recorded without a live intercept. Volume IV bundles four such programs. The first covers ALA-17 flare deployments, dropping one to three decoy flares against a simulated missile lock-on. The second covers C-130 susceptibility: how easily a C-130 flying low could be locked onto by a ground-launched infrared-guided missile. The third tests QRC-399 jamming equipment against ATOLL-type missiles, the NATO name for the Soviet K-13, a missile developed as a reverse-engineered copy of the U.S. AIM-9B Sidewinder and resembling it closely as a result. The fourth is infrared radiometry: measuring the actual heat signature the target aircraft gave off. These are four separate test series in one binder, not four chapters of one story.
What each section recorded
The flare tests found that one to three ALA-17 flares successfully decoyed the simulated missile in most scenarios tried, with some exceptions the report does not spell out. The C-130 susceptibility tests found that lock-on was achievable at small offset distances from the launch point during low-level flight, and harder to achieve as the offset grew larger. The QRC-399 tests found that jamming success against ATOLL depended on reaching a high jamming-to-signal ratio, the proportion of jamming power to the missile’s own tracking signal strength needed to break its lock; the report treats this ratio as the decisive variable, particularly against ATOLL’s tighter turning performance. The radiometry section produced quantified figures for aircraft infrared emissions and calculated decoy-success probabilities from them. Each result belongs to its own test. The document does not merge them into a single pass-fail score.
The judgment the document never makes
What the report does not do is tell a reader whether a C-130 crew flying a real mission against a real infrared-guided missile was, on balance, safe. There is no summary conclusion of that kind anywhere in the volume. That absence is a structural feature of this kind of document: a technical test compilation reports what happened under specified conditions, and stops there. It is not built to render a verdict on operational risk, and nothing in the record suggests it was meant to.
The thresholds it never states
The language throughout is qualified rather than quantified. “Most but not all” scenarios does not say which ones failed or why. “A high jamming-to-signal ratio” does not give the number that counted as high, or the number at which QRC-399 stopped working against ATOLL. “Small” and “larger” offset distances are never attached to actual figures for the C-130 tests. These are gaps in what the report chose to state, not gaps that imply something was hidden. A reader who wants to judge exactly how thin the margin was, the number that separated a decoyed missile from a successful lock-on, cannot get it from this volume.
Whether Phase III held up
A separate question is whether these findings were later confirmed or overturned. Volume IV gives no indication of what earlier Phase III volumes contained, cites no later phase, and references no addendum. Whether HAVE CARGO’s subsequent work revised any of these results, or simply repeated them, is not addressed here. That is a question about the document’s place in a series, not about anything incomplete within the document itself.
A file that has mostly just sat there
Beyond Greenewald’s 2024 posting, no independent government archive record, FOIA reading-room listing, or news account of this specific volume turned up in a general search. There is no whistleblower claim attached to it, no campaigner reading, no later reporting built around it. The document has now been public for roughly two years and has drawn, on the available evidence, no outside attention at all. A file can sit in plain sight, fully searchable, and still go unread by anyone with a theory to attach to it. That, too, is a fact worth noticing: not every declassified record is waiting to be discovered. Some are simply waiting.