The U.S. government tested a device that emits pulsed microwave energy during a 2024 experiment in Norway, and a self-test with the device produced neurological symptoms resembling those reported by American diplomats and intelligence officers affected by what has become known as Havana Syndrome. The Norwegian government informed the CIA about the experiment, and U.S. officials subsequently visited the site. The revelation, first detailed in Washington Post reporting, adds a new and uncomfortable dimension to a long-running debate over whether a foreign adversary weaponized directed energy against American personnel, or whether the answer may be closer to home.
A Secret Experiment in Norway
The 2024 experiment involved a device capable of emitting powerful pulsed microwave energy under controlled conditions. During a self-test, an individual using the device experienced acute neurological symptoms described as similar to those reported in Havana Syndrome cases, including sudden head pressure, dizziness, and cognitive disruption. After Norwegian authorities learned of the test and its effects, they contacted the CIA, prompting U.S. officials to travel to Norway, review the device, and interview those involved in the experiment.
Following that review, the device was transferred to U.S. custody and ultimately acquired by Homeland Security Investigations, the investigative arm of the Department of Homeland Security. Inside the U.S. government, however, its significance remains hotly contested. Some officials see the Norway device as proof that relatively compact systems can generate the kind of pulsed energy that might plausibly trigger anomalous health incidents, or AHIs. Others argue that a single incident in a testing environment cannot explain a global pattern of reports, and they caution against drawing sweeping conclusions from limited data.
According to accounts cited by lawmakers and current and former officials, the device is still being examined by technical experts, and there is ongoing debate (and, in some corners, deep skepticism) over whether it is directly relevant to Havana Syndrome. That internal friction mirrors the broader struggle within the national security bureaucracy: for nearly a decade, agencies have failed to agree on whether AHIs stem from a hostile actor’s technology, an environmental factor, a psychogenic phenomenon, or some combination of these possibilities.
Congressional Pressure Mounts
Frustration with that ambiguity has driven a new wave of congressional scrutiny. In late 2024, Rep. Rick Crawford and the House Intelligence Committee’s CIA Subcommittee released an interim product that sharply questioned earlier intelligence community judgments. The subcommittee’s work, summarized in its interim findings, argued that prior assessments discounted evidence consistent with an external, possibly technologically mediated cause of AHIs.
Those findings did not fully reject the intelligence community’s prior work but suggested it had been overly confident in ruling out a foreign adversary. The subcommittee pointed to classified case files, technical analyses, and victim interviews that, in its view, warranted a more cautious and expansive set of hypotheses. The broader oversight record, including formal committee documentation and public materials maintained by the panel’s minority members, underscores that concern about AHIs spans party lines, even as lawmakers differ on how aggressively to confront the executive branch.
In January 2026, House Homeland Security Committee Republicans opened a separate inquiry focused squarely on the Norway-linked device, which had been acquired by DHS during the Biden administration. In a letter to department leaders, the chairmen wrote that, although assessments from the intelligence community do not conclusively identify the factor responsible for AHIs, Congress expects detailed answers about how the device entered U.S. hands, what testing protocols have been used, and what the results show so far. The Homeland Security Committee probe highlights growing impatience on Capitol Hill with what many lawmakers see as opaque and slow-moving executive branch reviews.
Lawmakers are also using their leverage over budgets and authorities to press for more support to affected personnel. Some members argue that, regardless of the ultimate cause, the government has a clear obligation to provide medical care, compensation, and clear communication to those who believe they have been injured in the line of duty. For them, the Norway device is less a smoking gun than a symbol of how much remains unknown, and how much the government has yet to disclose.
Intelligence Community Divisions
The congressional backlash is unfolding against the backdrop of a divided intelligence community assessment released in 2023. In a public statement, the Office of the Director of National Intelligence explained that most U.S. agencies judged it “unlikely” that a foreign adversary was behind the majority of AHIs, even as they acknowledged that affected personnel experienced a distinct cluster of symptoms. The ODNI summary described the pattern as a “unique syndrome” but emphasized that analysts had found no consistent evidence of a coordinated global campaign.
That assessment was not unanimous. Two intelligence agencies dissented, maintaining that a foreign actor’s involvement remained plausible and that some incidents, particularly those affecting intelligence and diplomatic personnel in sensitive locations, could not be fully explained by benign environmental or medical factors. That split, previously treated as a technical disagreement within the classified world, has taken on new weight in light of the Norway experiment.
If a U.S.-linked device can, under test conditions, induce symptoms that resemble those of reported AHIs, the debate shifts from whether such technology is possible to whether it has been operationalized—and by whom. Skeptics of the foreign-adversary theory note that the Norway device was under U.S. control and may reflect domestic research into nonlethal crowd-control or security tools rather than offensive weapons. Others counter that the existence of such a device makes it easier to imagine that other countries, or even non-state actors, could field similar systems, particularly if they have access to advanced electronics and power sources.
For now, the intelligence community has not revised its 2023 conclusions, and officials stress that no single piece of hardware can resolve a complex, multi-year analytic puzzle. But the Norway case has clearly reopened questions that some agencies had hoped were settled, and it has provided fresh ammunition to those inside and outside government who believe the original assessment was too quick to discount the possibility of hostile intent.
Medical Evidence Complicates the Picture
Throughout these policy and intelligence fights, one point has been relatively consistent: many affected personnel report strikingly similar symptoms. Individuals describe sudden onset of intense cranial pressure, tinnitus, vertigo, nausea, and lingering cognitive problems, sometimes after perceiving a directional sound or sensation. The challenge has been to translate those subjective experiences into objective medical findings that can anchor policy decisions.
A major neuroimaging study sought to do just that by comparing U.S. government personnel and family members who reported AHIs with carefully matched control subjects. The authors found no statistically significant differences in brain structure on MRI scans after correcting for multiple comparisons, concluding that there were no clear structural abnormalities that distinguished the AHI group. The peer-reviewed analysis has been widely cited by skeptics who argue that the absence of detectable brain changes undermines claims of a novel, externally induced injury.
Yet the study’s limitations have also been central to the counterargument. MRI technology is excellent at revealing gross structural damage (tumors, hemorrhages, major lesions), but it is less adept at detecting subtle, transient, or purely functional disruptions in neural signaling. Advocates for AHI victims and some neurologists note that conditions such as migraines, certain seizure disorders, and mild traumatic brain injuries can produce debilitating symptoms with little or no visible change on standard imaging. From that perspective, the Norway experiment’s ability to elicit acute neurological symptoms with pulsed microwave exposure is significant even if it leaves no lasting structural mark.
Another complicating factor is the heterogeneity of reported cases. Not every AHI looks the same, and not every affected individual has undergone the same battery of tests at the same time relative to symptom onset. Some may have experienced brief, intense episodes that resolved quickly; others report chronic issues that persist for years. This variability makes it difficult to design studies that can capture a single, unifying pathology, especially when security concerns restrict what researchers can publicly disclose about the circumstances of exposure.
The Norway device sits at the intersection of these scientific and policy uncertainties. If further testing confirms that it can reliably induce specific neurological effects, it may offer researchers a controlled way to study how pulsed energy interacts with the human nervous system, potentially yielding biomarkers or functional signatures that go beyond conventional MRI. But it also raises thorny ethical questions about human experimentation and the risk of creating, rather than merely investigating, the very injuries the government is trying to understand.
Unanswered Questions and Next Steps
The emerging picture is one of overlapping, unresolved debates. Intelligence agencies remain divided over how to weigh sparse and often classified data. Lawmakers are pressing for transparency while accusing the executive branch of downplaying or mishandling the problem. Medical researchers are caught between the demand for definitive answers and the limits of current technology and study design. The Norway experiment does not settle these disputes, but it changes their stakes.
Key questions now confronting policymakers include who authorized the original Norway test, what safeguards were in place for participants, how the device has been evaluated since its transfer to U.S. custody, and whether its capabilities match patterns observed in real-world AHI incidents. The answers will shape not only the future of Havana Syndrome investigations but also broader norms around directed-energy research, both in the United States and abroad.
For affected personnel and their families, the technical and geopolitical nuances are secondary to more immediate concerns: recognition, care, and accountability. Whether the cause is ultimately traced to a foreign adversary, a domestic program, an environmental factor, or some combination thereof, the government’s response will be judged by how it treats those who believe they have been harmed while serving their country, and by how candid it is about what it knows, and what it still does not.
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*This article was researched with the help of AI, with human editors creating the final content.
