Between July 2024 and February 2026, ten people connected to U.S. defense aerospace programs have died or vanished under circumstances that range from unexplained to violent. They worked at the Air Force Research Laboratory, the Jet Propulsion Laboratory, Los Alamos National Laboratory, Caltech, and MIT. Four states. Nineteen months. One institutional ecosystem linking every name through patent filings, federal contracts, and classified research programs.

For months, these cases existed in separate jurisdictions and separate news cycles. An independent investigative publication called The Sentinel Network was the first to compile them into a single list. In the week of March 17–25, 2026, CNN, ABC News, Fox News, NewsNation, Newsweek, and the Daily Mail all began covering connections between at least some of these cases.

This article documents what is publicly known about each person, what has been verified through official sources, and where the gaps remain.

The Missing

Four people connected to the defense aerospace corridor have vanished without a trace. In every case, personal effects were left behind. In every case, searches returned nothing. In every case, no body has been recovered.

Anthony Chavez – Los Alamos, New Mexico

Anthony Chavez, 78, was a longtime resident of Los Alamos who worked at Los Alamos National Laboratory until approximately 2017. He lived on 37th Street in the Denver Steels neighborhood – prefabricated homes built by the Atomic Energy Commission in the late 1940s to house workers during the postwar expansion of the nuclear weapons complex.

His landline records indicate he was last active on the evening of May 4, 2025. He did not carry a cell phone. On May 8, when friends and family could not reach him, the Los Alamos Police Department conducted a welfare check (Case #2025-0254). His car was locked in the driveway. His wallet, keys, and personal items were inside the house.

“His car was locked and parked in his driveway. His wallet, car keys and personal items were in his home, so it appears that he left his home with the intention of not being gone for more than a few minutes. He did hike in Pueblo Canyon often, but it does not appear that he left home prepared for a hike, plus the weather was very inclement. He does not carry a cell phone.” – Carl Buckland, friend, Los Alamos Reporter, May 12, 2025

Deputy Chief James Rodriguez of the Los Alamos Police Department confirmed the search was ongoing: “Our officers are actively following every lead, reviewing evidence, and coordinating with multiple agencies and local businesses to find Mr. Chavez.”

Chavez’s specific role at LANL has not been publicly confirmed. He has never been found.

Monica Jacinto (Monica Reza) – Angeles National Forest, California

Monica Jacinto, 60 – known professionally as Monica Reza at Aerojet Rocketdyne – vanished while hiking the Mount Waterman Trail in California’s Angeles National Forest in June 2025. She was approximately 30 feet behind a hiking companion when she disappeared. FLIR-equipped aerial search teams found no trace.

Jacinto was a materials engineering fellow at Aerojet Rocketdyne and the co-inventor of Mondaloy, a family of advanced nickel-based superalloys developed in the 1990s with metallurgist Dallis Hardwick at the Rockwell Science Center. Mondaloy was funded through Air Force Research Laboratory contracts and designed for next-generation rocket propulsion. Hardwick, who spent the latter part of her career at AFRL, died of cancer in 2014.

The Daily Mail reported that McCasland’s disappearance bore striking parallels to Jacinto’s – both connected to AFRL-funded work, both vanishing without explanation.

On March 23, 2026, The Sentinel Network published “THE PHONE GAP”, alleging that cell phone forensic data was obtained during the Reza search but never publicly released – and that a Montrose Search and Rescue post referencing this work was subsequently removed. This claim has not been independently verified.

Her body has never been recovered. Full article

Melissa Casias – Taos, New Mexico

Melissa Casias, 53, a DOE advisory board member whose husband is a Superintendent III at Los Alamos National Laboratory, vanished on June 26, 2025, in Taos, New Mexico. The Sentinel Network reported that both of her phones were found factory-reset and that surveillance footage from a Talpa residence on NM-518 captured her walking eastbound carrying a backpack roughly an hour after she dropped off lunch to her daughter. A witness described her as “staggering across the road like she was hurt or intoxicated” – though her husband confirmed she was not a drinker.

Since the original Sentinel reporting, Casias’s case has been picked up by mainstream outlets including NBC Dateline’s Missing in America, KRQE, and the Daily Mail, which reported on the cluster of disappearances connected to New Mexico’s national laboratories.

She has never been found.

William Neil McCasland – Albuquerque, New Mexico

Retired Maj. Gen. William Neil McCasland, 68, former commander of the Air Force Research Laboratory at Wright-Patterson AFB, disappeared from his home in Albuquerque on February 27, 2026.

A BCSO press release dated March 12, 2026, provides the verified timeline: a repairman interacted with McCasland at approximately 10:00 a.m. His wife left for a medical appointment at 11:10 a.m. When she returned at 12:04 p.m., he was gone. His phone, prescription glasses, and wearable devices were left at the residence. Missing items include hiking boots, a wallet, a .38-caliber revolver with leather holster, and – per CNN – a red backpack.

Nobody witnessed McCasland leave his house. Despite canvassing more than 700 homes and reviewing security footage from both ends of his street, investigators have received no confirmed sighting or video showing his direction of travel.

“To date, BCSO has not received any confirmed sighting or confirmed video showing Mr. McCasland leaving the area or indicating a direction of travel.” – Bernalillo County Sheriff’s Office, March 12, 2026

On March 17, the Albuquerque Journal reported that BCSO had extended the search to McCasland’s second property in Pagosa Springs, Colorado, where clothing was found. Sheriff John Allen said hiking boots were also located at the Colorado residence, though he noted McCasland may have owned multiple pairs. FBI Special Agent in Charge Justin Garris (Albuquerque division) publicly confirmed the Bureau’s involvement: “During the investigation, the FBI has assisted the sheriff’s office with interviews, analysis and surveillance.”

Lt. Kyle Woods told reporters that unseasonably warm winter temperatures were hampering FLIR thermal imaging searches – a detail CNN independently confirmed – and that survival odds were low if McCasland had entered the mountains weeks prior. On the flood of UFO-related tips, Woods was direct:

“I appreciate that there’s a community that wants to go down the rabbit hole of UFOs. I don’t have a way with which to pursue that and so those theories have to be set aside unless we were to find something that would (have) indicated that.” – Lt. Kyle Woods, BCSO, Albuquerque Journal

Meanwhile, Newsweek reported that BCSO is officially examining whether a connection exists between McCasland’s disappearance and that of Monica Jacinto (Reza): “Detectives are looking into this to see if there is any connection at all.” This is not a confirmed link – but it is an official acknowledgment that investigators are examining one.

Rep. Eric Burlison (R-MO), a member of the House Oversight and Accountability Committee, went further on the Weaponized podcast on March 13: “General McCasland definitely is connected to the UAP topic. We believe that he has a lot to say about this topic.”

Ross Coulthart, investigative journalist for NewsNation, called the disappearance a national security crisis:

“The fact that Gen. Neil McCasland has disappeared off the face of the earth is a grave national security crisis for the United States of America. This is a man with some of the most sensitive secrets of the United States in his head.” – NewsNation

Former FBI special agent Jennifer Coffindaffer told Newsweek that the terrain makes recovery extremely difficult: “It’s a needle in a haystack finding an individual in the Sandia mountain foothills.” She compared the challenge to the Brian Laundrie case, where remains went undiscovered in Florida wilderness for weeks.

As of this writing, McCasland has not been found. Full article

The Dead

The entrance to Los Alamos National Laboratory at dusk – one of several defense aerospace facilities connected to the pattern

Six people connected to defense aerospace have died since July 2024. Three were shot. Three died in what investigators believe was a murder-suicide. One death has no publicly disclosed cause.

Frank Werner Maiwald – Jet Propulsion Laboratory

Frank Werner Maiwald, 61, a technical group supervisor at JPL, died on July 4, 2024. Born in Ratingen, Germany, educated at the University of Cologne, Maiwald managed the development of the SBG-VSWIR instrument (a visible shortwave infrared spectrometer for Earth observation) and the AMR-C program (advanced microwave radiometry). The NASA Technical Reports Server lists 67 publications under his name at JPL spanning radiometry, terahertz spectroscopy, and orbital remote sensing.

His obituary on Legacy.com contains no cause of death. No illness is described. No memorial statement from JPL, NASA, or Caltech has been located. Colleagues’ guest book entries describe the death as sudden.

Maiwald’s work on visible shortwave infrared spectroscopy – technology that detects anomalous surface emissions and identifies materials from orbit – is inherently dual-use. The civilian applications are climate monitoring. The defense applications are intelligence, surveillance, and reconnaissance.

JPL is where Monica Jacinto was working when she vanished eleven months later. Caltech/IPAC, where Carl Grillmair ran quality assurance on the NEOWISE data pipeline, is part of the same institutional family.

Note: Maiwald’s death date and cause have not been independently verified beyond the Legacy.com obituary cited by The Sentinel Network. His JPL affiliation is confirmed through NTRS publications.

Jacob Prichard, Jaymee Prichard, and 1st Lt. Jaime Gustitus – Wright-Patterson AFB

On the night of October 24–25, 2025, three Wright-Patterson AFB personnel were found dead in the Dayton, Ohio area.

  • Jacob Prichard, 34, AFRL Sensors Directorate
  • Jaymee Prichard, 33, Air Force Life Cycle Management Center (AFLCMC), Jacob’s spouse
  • 1st Lt. Jaime Gustitus, 25, AFRL 711th Human Performance Wing, held a TS/SCI security clearance

Fox News reported that Ohio BCI and Air Force Office of Special Investigations opened a joint investigation. Local outlet WHIO reported that investigators believe Jacob Prichard killed Jaymee Prichard and Gustitus before dying by suicide at the West Milton municipal building at approximately 4:00 a.m. No official motive has been disclosed.

“We are deeply saddened by this tragic event, and our thoughts and prayers are with the families and loved ones affected.” – Lt. Gen. Linda Hurry, Deputy Commander, Air Force Materiel Command

Nuno F. G. Loureiro – MIT / Los Alamos National Laboratory

Professor Nuno Loureiro, 47, the Herman Feshbach Professor of Physics and Director of the MIT Plasma Science and Fusion Center, was fatally shot on December 16, 2025. MIT News confirmed the cause of death as gunshot wounds.

Loureiro was also a Stanislaw Ulam Distinguished Scholar at Los Alamos National Laboratory, connecting him to the same institutional corridor as Chavez and Casias.

“With great sadness, I write to share the tragic news that Professor Nuno Loureiro, director of the Plasma Science and Fusion Center (PSFC), died early this morning from gunshot wounds he sustained a few hours before.” – Sally Kornbluth, President of MIT

A subsequent MIT statement on December 19 linked the homicide investigation to law enforcement announcements regarding the suspect in the Brown University mass shooting. A perpetrator has been identified.

Carl Grillmair – Caltech / IPAC

Carl Grillmair, 67, an astronomer at Caltech’s Infrared Processing and Analysis Center (IPAC), died on February 16, 2026. Caltech’s obituary states he “passed away suddenly” at age 67 without specifying manner of death.

Third-party sources and an LASD Nixle alert describe a shooting death investigation at a residence in Llano, California on that date. The Sentinel Network reported that the suspected shooter’s prior charges had been dismissed eleven days before the killing; this specific claim was not independently verified in our research.

Grillmair ran quality assurance on the NEOWISE Science Data Center and was performing instrument characterization for NEO Surveyor – NASA’s first dedicated near-Earth object detection telescope. His work sat at the center of the planetary defense detection pipeline.

The Shared Signature

The four missing-persons cases share a set of physical characteristics that The Sentinel Network has termed “the signature”:

DetailChavezCasiasJacinto (Reza)McCasland
Personal effects left behindWallet, keysPhones (factory-reset)—Phone, glasses, wearables
Backpack involved—Yes—Red backpack missing
Search technology deployedCadaver dogs—FLIR aerialK-9, drones, helicopter, SAR
Confirmed sighting after disappearanceNoneSurveillance camera (staggering)NoneNone
Body recoveredNoNoNoNo
LocationLos Alamos, NMTaos, NMAngeles National Forest, CAAlbuquerque, NM

Three of the four cases are in New Mexico. All four are in the defense aerospace corridor. All four searches returned negative results for remains.

The Institutional Thread

Every name on this list connects to a single institutional ecosystem through patent filings, OSTI publications, congressional testimony, DTIC records, or federal contract databases:

  • AFRL (Air Force Research Laboratory): McCasland (commander), Jacob Prichard (Sensors Directorate), Gustitus (711th HPW), Jacinto/Hardwick (Mondaloy funding)
  • JPL / Caltech: Maiwald (instrument management), Grillmair (NEOWISE/NEO Surveyor), Jacinto (Aerojet Rocketdyne contractor)
  • LANL / DOE: Chavez (employee), Casias (DOE advisory), Loureiro (Ulam Distinguished Scholar)
  • Wright-Patterson AFB: McCasland (AFRL commander), Prichard x2 and Gustitus (AFRL/AFLCMC)

The Source

The Sentinel Network is an independent Substack publication that began compiling these connections in March 2026 through a series of briefings: “THE GHOST GENERAL” (March 9), “THE DEAD DROP” (March 11), “THE LONG COUNT” (March 18), and “THE BLIND SPOT” (March 25). The publication describes its methodology as “forensic data analysis, open-source intelligence methods, and Scientific Brutalism.”

The Sentinel is anonymous. Its institutional credibility is unestablished. However, its sourcing is transparent – claims link to BCSO press releases, MIT obituaries, Caltech statements, Fox News, CNN, and NASA databases – and the verifiable claims in its reporting have held up when checked against primary sources.

Within a week of The Sentinel’s initial briefings, CNN, ABC News, Fox News, NewsNation, Newsweek, and the Daily Mail published stories covering overlapping facts – particularly the McCasland-Reza connection and the AFRL institutional thread.

What Is Not Being Claimed

This article does not assert that these deaths and disappearances share a common cause. Several of the cases have reported explanations: the Wright-Patterson deaths are described by investigators as a likely murder-suicide; Loureiro’s killing has been linked to an identified suspect; Grillmair’s death appears to be a separate homicide.

What is documented is that nobody was looking at these names together until someone did. The institutional overlap, geographic clustering, and temporal compression are matters of public record. Whether they constitute a pattern or a coincidence is a question that requires investigators with subpoena authority – not journalists or Substack writers.

Timeline

DatePersonEvent
July 4, 2024Frank Werner MaiwaldDead. JPL. No cause disclosed.
May 4–8, 2025Anthony ChavezMissing. Los Alamos. Wallet/keys left.
June 22, 2025Monica Jacinto (Reza)Missing. Angeles National Forest.
June 26, 2025Melissa CasiasMissing. Taos, NM. Phones factory-reset.
October 25, 2025Prichard, Prichard, GustitusDead. Wright-Patterson AFB.
December 16, 2025Nuno LoureiroDead. MIT / LANL. Gunshot wounds.
February 16, 2026Carl GrillmairDead. Caltech / IPAC. Shooting.
February 27, 2026William Neil McCaslandMissing. Albuquerque. Silver Alert active.

Sources