A Pattern of Deaths and Disappearances: Investigating Potential National Security Threats

A series of deaths and disappearances involving at least 10 individuals with connections to U.S. nuclear weapons, aerospace, and classified defense research programs has prompted investigations by the FBI and the House Oversight Committee. The circumstances of the incidents vary and include unsolved homicides, missing persons cases, and deaths attributed to other causes. Authorities have not established any links between the cases.

"It's very unlikely that this is a coincidence… Our committee is making this one of our priorities now because we view this as a national security threat." — Rep. James Comer (R-KY)

Scope of the Investigations

The FBI has stated it is leading an effort to investigate potential connections between the cases, working with the Department of Energy, the Department of Defense, and state and local law enforcement. FBI Director Kash Patel said the agency is looking for links related to classified access or foreign actors.

The Republican-led House Oversight Committee has formally requested staff-level briefings from the FBI, the Department of Defense, the Department of Energy, and NASA by April 27. Committee Chairman James Comer has stated that the pattern of incidents was unlikely to be a coincidence and could represent a national security threat. The committee is seeking information on a "possible sinister connection."

The White House announced it is working with federal agencies to probe any potential links. President Donald Trump referred to the matter as "serious" and stated that an investigation would be conducted.

Reported Cases: Deaths

The following deaths have been reported in connection to the investigations:

Michael David Hicks (59)

A scientist who worked at NASA's Jet Propulsion Laboratory (JPL) for nearly 25 years, died on July 30, 2023. His cause of death was not disclosed. His daughter stated he had been struggling with known medical issues.

Frank Maiwald (61)

A NASA JPL principal scientist specializing in space research, died in Los Angeles on July 4 or 7, 2024. The cause of death was not made public, and officials confirmed no autopsy was performed.

Matthew James Sullivan (39)

A former U.S. Air Force intelligence officer, died in 2024 from an accidental drug overdose, according to official reports. Rep. Eric Burlison (R) stated Sullivan died by suicide and called the circumstances suspicious.

Nuno F.G. Loureiro (47)

An MIT professor and fusion scientist, was fatally shot at his home near Boston on December 15, 2025. Authorities identified the suspect as a former classmate.

Jason Thomas

A pharmaceutical researcher, disappeared in December 2025. His remains were found in a Massachusetts lake on March 17, 2026. An official cause of death was reported as drowning.

Carl Grillmair (67)

An astrophysicist at Caltech who collaborated with NASA, was fatally shot at his home outside Los Angeles on February 16, 2026. Authorities arrested a suspect they believe did not know Grillmair.

Joshua LeBlanc

An electrical engineer at NASA Marshall Space Flight Center, died in a car crash on July 22, 2025.

Amy Eskridge (34)

Co-founded the Institute for Exotic Science, died in 2022. Her family stated she suffered from chronic pain.

David Wilcock

A UFO researcher, died by suicide in March 2025.

Reported Cases: Disappearances

The following individuals have been reported missing in connection to the investigations:

Anthony Chavez (78-79)

A retiree who worked as a foreman at Los Alamos National Laboratory, disappeared from his New Mexico home in May 2025. Los Alamos police said there are no signs of foul play. He left behind his phone, wallet, and keys.

Monica Jacinto Reza (60)

An aerospace engineer and director of the Materials Processing Group at NASA's Jet Propulsion Laboratory, disappeared while hiking in a Los Angeles forest on June 22, 2025.

Melissa Casias (53-54)

An administrative assistant at Los Alamos National Laboratory, disappeared on foot from her home near Talpa, New Mexico, on June 26, 2025. New Mexico State Police said no foul play is suspected. She left behind personal items.

Steven Garcia (48)

A government contractor, was last seen leaving his Albuquerque, New Mexico home on foot on August 28, 2025. Surveillance footage showed him wearing a green camouflage shirt and shorts and carrying a handgun. An anonymous source reported he worked as a property custodian at the Kansas City National Security Campus (KCNSC), a facility that manufactures non-nuclear components for U.S. nuclear weapons. The source stated his position provided him with a top security clearance. Albuquerque police stated he "may be a danger to himself." KCNSC reportedly searched his work computers and files but found no clues. The Department of Energy and KCNSC have not publicly confirmed his employment.

William Neil McCasland (68)

A retired U.S. Air Force Major General and former commander of the Air Force Research Laboratory, has been missing since February 27, 2026, from his Albuquerque, New Mexico home. He was last seen carrying a .38-caliber revolver and no phone or wearable devices. The FBI is involved in the search. His wife disputed speculation his disappearance was tied to his work.

Statements and Perspectives

"I hope it's random, but we're going to know in the next week and a half." — President Donald Trump, March 27, 2026

"We're going to look for connections … on whether there are connections to classified access, access to classified information, and or foreign actors. If there's any connections that lead to nefarious conduct or conspiracy, this FBI will make the appropriate arrest." — FBI Director Kash Patel

NASA: A spokesperson stated NASA is "coordinating and cooperating with the relevant agencies" and that "at this time, nothing related to NASA indicates a national security threat."

Rep. James Comer (R-KY): "It's very unlikely that this is a coincidence… Our committee is making this one of our priorities now because we view this as a national security threat."

Rep. James Walkinshaw (D): Agreed an investigation is warranted but said he is not convinced there is a coordinated motive, stating, "The United States has thousands of nuclear scientists and nuclear experts. It's not the kind of nuclear program that potentially a foreign adversary could significantly impact by targeting 10 individuals."

Susan McCasland Wilkerson (Wife of William McCasland): Publicly dismissed conspiracy theories regarding her husband's disappearance.

Former FBI Assistant Director Chris Swecker: Told the Daily Mail that U.S. scientists have long been targeted by hostile foreign intelligence services.

Unnamed source (per Daily Mail): Described Steven Garcia as a "very stable person" and suggested foreign spies may have been involved.