Missing Scientists

Missing Scientists List Hits 11 as FBI, White House, and Congress All Launch Investigations

The FBI, the White House, and the House Oversight Committee are now investigating the deaths and disappearances of 11 scientists tied to America’s nuclear and aerospace secrets — the pattern officials still insist doesn’t exist.

Ryan Callicoat • 6 min read min read
Missing Scientists List Hits 11 as FBI, White House, and Congress All Launch Investigations

For more than a year, we told you to watch the names. One materials scientist who vanished on a mountain trail. One retired two-star general who walked out of his own home and disappeared inside a 54-minute window. A superalloy almost nobody outside a classified vault has ever heard of. We connected those dots when the mainstream press was still calling each case an isolated tragedy.

Now the dots have a federal case number. As of May 2026, the FBI is actively investigating the deaths and disappearances of scientists and staff tied to America's most sensitive nuclear and aerospace programs. The White House says it is coordinating across agencies. The House Oversight Committee has opened its own probe. And the list — the one we've been keeping for you — has quietly grown to eleven.

So let's ask the question the people with the clearances keep avoiding: if there's nothing here, why is everyone suddenly investigating?

The list nobody could ignore anymore

Reporting from CNN, Fortune, and CBS News now confirms what we'd been mapping for months: at least ten — and by the latest count, eleven — people connected to sensitive U.S. research have died or vanished in recent years. The institutions read like a target list of American technological supremacy: NASA's Jet Propulsion Laboratory. Los Alamos National Laboratory. MIT. Caltech. The orbit of Blue Origin and SpaceX.

These are not random people. These are the people who hold the math, the metallurgy, and the propulsion secrets that other nations would burn a decade of espionage budget to obtain.

The trail where it started

Monica Reza, 60, a materials scientist who held a patent on a nickel-based superalloy used in both spaceflight and weaponry, walked onto a hiking trail off the Angeles Crest Highway in June 2025 and never walked off it. No body. No gear. No forensic trace. We covered her case in depth — and the metal she helped create — in The Mondaloy Connection: Two Defense Scientists, Eight Months Apart, Zero Traces.

Eerie empty foggy mountain hiking trail at dusk in the Angeles National Forest, evoking the disappearance of materials scientist Monica Reza
Materials scientist Monica Reza vanished on a fog-bound trail off the Angeles Crest Highway in June 2025. No body. No gear. No trace.

Eight months later, in February 2026, retired Air Force Major General William Neil McCasland — a man who once commanded Kirtland Air Force Base and the AFRL Space Vehicle Directorate, who controlled the funding for the very propulsion research Reza's metal made possible — left his phone, his glasses, and his wearable devices at his Albuquerque home and disappeared. We laid out the contradictions in The Mysterious Disappearance of Retired Major General William Neil McCasland: What They're Not Telling Us.

The newest name on the list

The eleventh entry should stop you cold. Nuno F. G. Loureiro, a 47-year-old physicist who led MIT's Plasma Science and Fusion Center — one of the brightest minds in fusion energy on Earth — was fatally shot at his home near Boston in December 2025, according to Men's Journal and The Hill.

Vanished hikers can be explained away as accidents. A fusion lead shot dead in his own home cannot. The "tragic coincidence" narrative gets harder to sell with every name added to the ledger.

When the FBI and the White House quietly get involved

Here is the part the official statements bury in the seventh paragraph. According to CNN, the FBI is now reviewing these cases together, hunting for commonalities — and the specific threads they're pulling are telling: classified access, exposure to classified information, and possible foreign actors.

Read that again. The Bureau isn't looking for a serial predator or a string of bad luck on hiking trails. It's looking at who had the clearances and who might have wanted them silenced. The White House, per the same reporting, is working with "all relevant agencies" to review the cases as a set. You do not convene that kind of inter-agency machinery for a coincidence.

Congress wants the files

In late April 2026, the House Oversight Committee announced it would investigate the deaths and disappearances of personnel "who had access to sensitive scientific information." Chairman James Comer and Rep. Eric Burlison formally demanded information on the missing nuclear and rocket scientists; Axios confirmed the congressional alarm.

When Congress starts subpoenaing files about a pattern that officials simultaneously insist isn't a pattern, one of those two positions is a lie. Our money is on the denial.

The thread that keeps reappearing: Mondaloy

Glowing nickel-superalloy rocket engine turbine in a dark aerospace testing facility, representing the classified Mondaloy alloy at the center of the missing-scientists story
Mondaloy — a nickel-based superalloy engineered to survive a rocket engine's inferno without igniting. The people who knew it best keep disappearing.

Long-time readers know where this leads. Underneath nearly every name on this list runs the same buried wire: a classified nickel-based superalloy we've called Mondaloy — the superalloy the government doesn't want you to know about. A material engineered to survive the inferno inside a rocket engine without bursting into flame, built to end America's dependence on Russian RD-180 propulsion.

The people who invented it, funded it, and understood it are now dead, missing, or absorbed into a corporate structure following the 2023 consolidation of the firms that held the know-how. Knowledge that once lived in a dozen brilliant heads is being compressed into a vault — or into silence. That isn't our theory anymore. The FBI's own focus on "classified access" is the federal government quietly confirming the shape of the thing we've been describing all along.

What they're telling us — and what they're not

To their credit, the skeptics deserve a hearing. People close to the individual cases told CNN they see no links between them. Colleagues, outside experts, and several journalists have rejected the idea of a coordinated pattern, attributing the cluster to coincidence, mental-health crises, and the ordinary statistics of a large workforce. The "missing scientists" narrative even has its own skeptical write-up.

Fine. But notice the sleight of hand: the same establishment that swears there's no pattern has launched an FBI review, a White House inter-agency coordination effort, and a congressional investigation — into the pattern they say doesn't exist. You don't get to call something a coincidence while simultaneously dedicating federal investigative resources to its commonalities. Pick one.

The questions that don't add up

  • Why does the FBI's stated focus — classified access and foreign actors — match the exact profile we flagged months ago, while public statements still wave the cases off as unrelated?
  • How does a fusion-program leader get shot dead in his home and remain a footnote, while the country is flooded with UFO file releases that conveniently dominate the same news cycle?
  • Why does every road on this map eventually pass through the same classified alloy and the same handful of consolidated defense contractors?
  • And the oldest question of all: who benefits when the only people who fully understand America's next-generation propulsion are no longer able to talk?

We don't claim to have the final answer. We claim the official story has holes you could fly an RD-180 through — and that for once, the FBI, the White House, and Congress seem to agree the holes are worth investigating. We'll keep updating this thread as the names, and the cover stories, keep multiplying.

Question everything. Trust nothing. Seek truth.

Continuing coverage on TheyTellUsLies.com

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