Lambros Callimahos and the Survival Logic of the UFO Problem

Richard Dolan, July 31, 2026

I want to begin by thanking one of the members of this website, ActiveGuardian, who has repeatedly urged me to take a closer look at a short NSA document titled UFO Hypothesis and Survival Questions. 

I encourage you to read and download the paper here. This is direct from the NSA’s website.  

I have known about this paper for many years. I referred to it briefly in the first volume of UFOs and the National Security State. Yet I had never given the original document the sustained attention it deserves. Reading all seven pages closely, including its handwritten editorial comments and its strange final page (copy attached as downloadable PDF) makes it obvious that this is a very rich document.

The paper is dated 1968 and marked “Secret” and “Draft.” The surviving copy does not identify its author on the page. However, it has long been attributed to Lambros D. Callimahos, one of the National Security Agency’s leading cryptologists, although that attribution has sometimes been questioned. The NSA now hosts the document in its public collection of declassified UFO records but does not identify Callimahos as its author on the document page. But for convenience sake, and probably logic’s sake, let’s just say it was him. 

Callimahos was an unusual and fascinating figure. His bio info is available for searching, and the NSA’s website says a lot about him. He was born in Egypt to Greek parents in 1910, he graduated from Juilliard, toured as a concert flutist, entered Army cryptology during the Second World War, and later worked closely with William Friedman. At the NSA, he created the advanced CA-400 cryptanalysis course and founded the Dundee Society, whose members represented an elite group of American cryptanalysts. The NSA inducted him into its Cryptologic Hall of Honor in 2003. To put it simply, he seemed to be a towering intellect.

Last thing about Callimahos’s authorship or lack thereof. Even though this appeared to be something of a private paper — not therefore official NSA conclusions necessarily I —  the fact that this paper was associated with him does tell us what kind of mind has been associated with it: a brilliant cryptologist trained to detect hidden patterns, consider deception, and think about danger under conditions of incomplete information. That by itself should hint to us that this is a serious-minded paper.

The paper begins modestly. Its purpose is to consider “the human survival implications” of the principal explanations for UFOs. This wording is the key to everything that follows.

As you read it, you discover that the author is not really interested in proving what UFOs are. However, he is very interested in asking “what follows from each explanation?” You can genuinely get the sense that this is the approach of an intelligence officer, not a conventional scientist. A scientist would more likely want to ask which hypothesis is best supported by the available evidence. But an intelligence analyst must also ask what would happen if a low-probability hypothesis turned out to be true. Even if the data avalable is incomplete, since the consequences might still have to demand your attention. In intelligence work, you don’t have the luxury of dismissing something because the data isn’t good enough. So that is his approach here. 

His first hypothesis is that all UFO reports are hoaxes. Remember, this is 1968 and UFOs were still widely ridiculed by many people as hoaxes. The paper rejects this as unlikely. He notes that hoaxes are normally limited in time and place. By contrast, UFO reports have appeared across the world, have been made over long periods, and have included reports from scientists and other responsible observers. He cites Air Force records showing thirty-five unexplained sightings during three months in 1953.

But he does not stop at rejecting the hypothesis. He does something, frankly, more interesting. He asks what it would mean if the reports really were hoaxes. A worldwide pattern of false reports, involving scientists and other credible witnesses, would indicate a mental disturbance on a large scale. In a nuclear age, such a breakdown in collective judgment would itself be a survival problem.

The second hypothesis is hallucination. He points out: people hallucinate, radar can produce false returns, and groups can misperceive events. Yet the paper notes cases in which several observers and one or more radars reported the same thing at the same time. In some incidents, cameras or physical traces provided additional support. The author concludes that the evidence argues against reducing all UFO reports to hallucination.

But once again, he follows the rejected explanation to its logical conclusion. I don’t know of any other analyst who actually tries to do what he is doing here. Suppose, he says, the phenomenon was indeed largely illusory. Humanity would then be suffering a growing inability to distinguish reality from fantasy. Such a condition, he writes, would impair our ability to survive in an increasingly complex world and would require immediate scientific study before it reached “epidemic proportions.”

His method in all this has a real power. The conventional explanations do not make the problem disappear. They merely change its nature. If millions of people are reporting objects that do not exist, including trained observers with instrument confirmation, that is hardly reassuring.

The third hypothesis is that UFOs are natural phenomena. Here the author moves directly into questions of air defense. Military observers had described objects that appeared to behave like high-speed rockets or aircraft, sometimes with radar confirmation. If natural phenomena could consistently imitate advanced vehicles, then the ability of warning systems to recognize a genuine attack was open to question.

This is during the heart of the Cold War. What’s if an unidentified object approaching from the Arctic was dismissed as a UFO — when it was an incoming Soviet weapon? Military officers who had developed a blind spot toward UFO reports could leave an opening for enemy deception. The author also refers to objects or plasmas that seemed to evade radar or produce electromagnetic interference. An adversary might reproduce those effects to penetrate or disable defensive systems. Again, i think this is an extremely deep form of analysis, and you can see the mind of an experienced intelligence officer in operation.

This section highlights a problem the military must still live with today. Even when an unusual observation has an ordinary explanation, the failure to identify it can expose weaknesses in sensors, reporting channels, intelligence collection, or military response. An unknown object in restricted airspace remains a security problem until it is identified. That’s the reality.

The fourth hypothesis is that some UFOs are secret terrestrial projects. The author cites American and Canadian experimental vehicles as evidence that unusual craft can generate UFO reports. His conclusion: all UFOs should be examined carefully for signs of hostile or friendly classified projects. Failure to do so could leave a nation vulnerable to a new weapon. None of this requires extraterrestrials. It requires only an adversary willing to exploit institutional prejudice.

The fifth section, concerning extraterrestrial intelligence, is the most ambitious, and I would say, troubling part of the paper. His transition to this theme struck me as rather abrupt. He assumes that discovery by an extraterrestrial civilization would probably mean discovery by a technologically superior civilization. History, he argues, records repeated cases in which contact between unequal societies ended in conquest, absorption, or cultural destruction. And in human history, you cannot really argue against this observation with many counter-examples. 

However, he turns to Japan as one example of a society that did survive its confrontation with a superior foreign power. And this is surely true. Japan did so, frankly, in a courageous manner: its recognized its weakness. Then it created a feeling of national solidarity. It controlled its dealings with outsiders and learned everything possible about them. It then adopted the foreign advantages that were useful (which incidentally caused Europeans at the time to look condescendingly about how the Japanese were aping their own superior culture). But Japan also managed to preserve its own identity during this period of very rapid transformation, basically the mid-19th century into the twentieth.

At this point, you see that some of the prescriptions the author recommends are severe. He recommends “highly controlled and limited intercourse” with the superior culture. He favors doing only what circumstances make unavoidable. He also calls for a friendly outward posture, intensive study of the other civilization, and rapid adoption of its advantages. Basically, follow the Japanese model to the extent possible. You have to adaptat strategically while under probably severe pressure. I have to think, even under the most favorable conditions, i have a difficult time thinking our current civilization would fare as well. 

Also, I think it has to be said that his analogy with Japan has some limits. Human history does not tell us how a nonhuman civilization would behave. And frankly the UFO phenomenon, assuming it is extraterrestrial, has not behaved according to traditional human behaviors. 

You could also argue that technological superiority need not produce conquest. It is entirely conceivable that an extraterrestrial intelligence might be indifferent, restrained, divided, machine-based, or guided by motives for which human history offers no close parallel.

Still, how can one fault the author for considering the danger? A civilization capable of reaching Earth would possess powers beyond ours in probably every (or at least many) critical sciences that could be a serious problem to us: propulsion, energy, surveillance, materials science, and probably computation. Even peaceful contact could destabilize political authority, religion, economics, military power, and humanity’s understanding of itself. Simply because we are not at the point of open conquest does not mean the absence of influence by them, potentially in many ways.

The paper concludes that the final answer will probably involve more than one hypothesis. Which is hard to argue against. After all, the UFO record has always contained hoaxes, misidentifications, natural events, secret aircraft, and a certain number of cases that seem far too difficult to explain in any of these or other conventional terms. That is, as something truly anomalous to our civilization and our current understanding of reality.

The author then introduces an analogy. This is something I remember very well from my earlier read of this many years ago. If someone walking along a forest path shouted “rattler,” you would inevitably react before you complete a scientific investigation! If there is the possibility of a rattlesnake near you, you would certainly try to protect yourself immediately. You would then investigate: Can I identify the threat? Can I protect myself? The paper argues that the UFO problem requires more of this survival attitude and less of the “leisurely scientific approach.”

When I read this in the past, I thought, yes, entirely logical. And I still agree with that, more or less. But I would just point out that this is a position that does have at least one vulnerability. A survival mentality can sharpen your perception, yes. But it can also distort your perception. Not impossible. 

Think about this in areas having nothing to do with UFOs. A government acting under extreme fear can classify too much. It can misread unclear evidence or exaggerate threats. I am sure other dangers can also come out of such an approach, if taken to an extreme. The rattlesnake analogy assumes that the phenomenon is probably dangerous. This might be the case, but it might not exactly be the case, or it might somehow be more nuanced than that. For my part, I can’t say I know the full answer to the question of: what do they want? 

But the author (let’s say Callimahos) was aware that the opposite failure has already dominated public UFO policy for decades. Institutions regularly acted as though ridicule was the proper way to discuss this, rather than genuine analysis. Reports were regularly dismissed, at least in the public realm, because the subject was disreputable — while the subject remained disreputable because reports were dismissed. The author understood that this cycle could easily create an intelligence blind spot.

Then we arrive at the seventh and final page. Here he takes an unexpected turn. The author discusses animals kept in captivity. I must say, I had forgotten this section, and it’s extremely insightful. And I appreciate this section much more than when I first read it. 

He points out that, removed from the demands of the wild, animals usually become confused, unhealthy, sexually preoccupied, and unable to respond properly to their environment. He then asks whether modern civilization has produced similar effects in human beings. Looking at this from the standpoint of 2026, I think the answer is obvious. 

He therefore ends by wondering whether the UFO question might lead us to construct a society better able to develop healthy people who can recognize and adapt to reality.

That’s a somewhat hopeful ending, I suppose, but honestly, it feels detached from the preceding analysis. Almost as though it belongs to another essay. But actually, you could argue that it reveals the deepest concern behind the paper. Survival depends on more than weapons and warning systems. It depends on psychological health, intellectual honesty, social cohesion, and the ability to perceive what is actually present.

Now we have traveled nearly a full human lifetime since this paper was written. UFO Hypothesis and Survival Questions can’t tell us what UFOs are. Its sources, incidentally, were public books, congressional material, Air Force reports, newspapers, and other publicly available literature. You cannot use this paper as evidence that the NSA possessed a classified answer. Of course, it might have (and might today), but this paper does not demonstrate that. 

The paper’s value lies elsewhere. It refuses to assume that an unexplained phenomenon becomes harmless when you assign a conventional label to it. Hoax, hallucination, natural event, secret weapon, and extraterrestrial intelligence all have their own consequences. Some could be more dangerous than the UFOs themselves.

I had known about this document for a long time. But that is not the same as doing it justice. I am grateful to ActiveGuardian for patiently bringing me back to it.

Richard