No record of an autopsy could be found. No official explanation was offered. The only public record marking his passing on July 30, 2023, was a single obituary posted online.

Hicks' unexplained death now stands as one entry in a growing and deeply unsettling pattern. As the Daily Mail reported, his case marks the ninth person with ties to America's space or nuclear secrets who has died or mysteriously vanished in recent years. Three of those nine had close professional ties to Hicks himself. The pattern has drawn the attention of Congress, members of the U.S. intelligence community, and a former FBI assistant director, none of whom seem satisfied with what they've been told.

A cluster of deaths and disappearances no one can explain

The cases span from 2023 to 2026, coast to coast, and involve researchers at some of the most sensitive institutions in the country. Start with Hicks' colleagues at JPL.

Frank Maiwald, a longtime coworker of Hicks and a JPL Principal, an award given to scientists "making outstanding individual contributions", died in Los Angeles on July 4, 2024, at age 61. The circumstances remain unknown. Just 13 months before his death, Maiwald had been the lead researcher on a breakthrough that could help future space missions detect clear signs of life on other worlds less than 160 light-years from Earth. NASA and JPL did not comment on his death and did not reply to the Daily Mail's inquiries.

Monica Reza, JPL's new Director of the Materials Processing Group, had worked on the creation of advanced rocket technology before joining the lab's leadership. She vanished without a trace in June 2025 during a hike in California.

Carl Grillmair, a 67-year-old astrophysicist at the California Institute of Technology, was murdered on the front porch of his home on February 16, 2026. Grillmair had been personally involved with major space telescope missions led by NASA, contributed to the discovery of water on a distant planet, and worked on the NEOWISE and NEO Surveyor projects. His work was heavily supported by JPL.

That's four people with direct ties to the same cluster of institutions in Southern California. All dead or missing within three years.

The pattern extends well beyond JPL

The cases reach into nuclear research, fusion energy, pharmaceutical science, and the U.S. military's most classified programs.

Nuno Loureiro, a 47-year-old physicist who was leading efforts to create fusion energy, was assassinated at his home in the Boston suburb of Brookline on December 15, 2025. Authorities said the gunman was Claudio Neves Valente, a former classmate from Portugal.

Two workers at Los Alamos National Laboratory, Anthony Chavez, 79, who worked at the nuclear research lab until his retirement in 2017, and Melissa Casias, 54, an active administrative assistant believed to have held top security clearance, both vanished from their homes in New Mexico in 2025. Both were last seen leaving on foot. Neither has been found.

The disappearance of retired Air Force General William Neil McCasland, 68, added another layer. McCasland vanished on February 27, 2026, after reportedly leaving his home on foot carrying only a handgun. While commanding the Air Force Research Lab, McCasland had supervised and approved funding for Reza's work at JPL, a connection that ties his disappearance directly to the Southern California cases.

Jason Thomas, a pharmaceutical researcher testing cancer treatments at Novartis, was found dead in a Massachusetts lake on March 17, 2026, after disappearing without a trace three months earlier.

Former FBI official: 'You can say these are all suspicious'

Former FBI Assistant Director Chris Swecker did not mince words when asked about the pattern. He told the Daily Mail:

"You can say these are all suspicious, and these are scientists who have worked in critical technology."

Swecker pointed directly at the foreign intelligence threat. "China, Russia, even some of our friends, Pakistan, India, Iran, North Korea, they target this type of technology," he said. And this is not new. "It's been happening since the Cold War," Swecker added. "Especially when nuclear technology and missile technology were first coming to the forefront."

The concern is not abstract. Foreign adversaries have long targeted American researchers for recruitment, theft, and, in worst-case scenarios documented throughout the Cold War, elimination. The question Swecker's comments raise is whether anyone in the current national security apparatus is connecting these dots or treating the pattern as anything more than a series of unrelated tragedies.

The broader threat from hostile foreign actors targeting American institutions is well documented. Iran-linked hackers have hit U.S. banks, airports, and defense suppliers in recent years, demonstrating that adversaries are willing to strike at the infrastructure of American power through multiple vectors.

A congressman who doesn't trust the official silence

Tennessee Congressman Tim Burchett has been one of the few elected officials willing to press on the pattern publicly. He told the Daily Mail in March:

"There have been several others throughout the country that have disappeared under suspicious circumstances. I think we ought to be paying attention to it."

Burchett went further, directly challenging the intelligence community's handling of the matter. "The numbers seem very high in these certain areas of research. I think we'd better be paying attention, and I don't think we should trust our government," he said. He specifically called out the so-called "alphabet agencies" such as the FBI.

That distrust is not born from paranoia. It comes from a pattern of non-response. NASA and JPL have not commented on the deaths of Maiwald or Hicks. They did not reply to the Daily Mail's inquiries. When the people who run America's most advanced research programs refuse to acknowledge that their own scientists are dying and disappearing under unexplained circumstances, the silence itself becomes a fact worth examining.

The question of whether official explanations hold up under scrutiny is not unique to these cases. Independent forensic teams have challenged official death rulings in other high-profile cases, and the public's willingness to accept institutional conclusions at face value has eroded for good reason.

What we know, and what no one will say

Here is what the record shows. Nine people with ties to America's space or nuclear secrets have died or vanished since 2023. At least two were murdered. At least four vanished without explanation. At least two died from causes that were never disclosed. Three of the nine worked at or with the same laboratory in Pasadena.

A former FBI assistant director calls the cases suspicious. A sitting congressman says Washington should be paying attention. The agencies that employed these scientists have said nothing.

No one has publicly connected the cases to foreign intelligence operations. No one has publicly ruled that possibility out, either. The absence of investigation, or at least the absence of any visible investigation, is itself a policy choice. It tells the public that the people entrusted with protecting America's most sensitive research either don't see a pattern or don't want to talk about one.

Government accountability after suspicious or consequential deaths has been a recurring failure. Congress has struggled to act even after fatal incidents with clear policy solutions, raising questions about whether institutional inertia prevents meaningful responses when lives are at stake.

The cost of looking away

The people on this list were not political operatives or media figures. They were researchers, people who spent careers understanding comets, building rocket technology, hunting for signs of life beyond Earth, developing fusion energy, and working inside nuclear laboratories that form the backbone of American deterrence. They held knowledge that foreign adversaries would pay dearly to acquire or neutralize.

Michael David Hicks worked at JPL for 24 years. He helped America understand the solar system. He died at 59, and nobody will say why. His colleague Frank Maiwald made a scientific breakthrough in June 2023 and was dead 13 months later from causes that remain publicly unknown. Monica Reza helped build advanced rocket technology and walked into the California wilderness and never came back.

These are not conspiracy theories. These are facts, names, dates, institutions, and a pattern that a former FBI assistant director and a sitting congressman both say demands answers.

When the government won't explain why its own scientists keep dying, the public has every right to ask who benefits from the silence.