Who are the missing or dead scientists with connections to government research?

(NewsNation) — Ten scientists have died or disappeared, all with links to the nation’s nuclear programs, raising questions about possible connections.

On Thursday, President Trump said he was in a meeting about the cases and expects to know more in a week and a half. He expressed hope the links between the cases were just a coincidence.

Here’s what we know about the wave of scientists who have died or disappeared.

Steven Garcia, a 48-year-old government contractor, was last seen leaving his home in Albuquerque on Aug. 28, 2025. He was on foot and carrying a handgun, with police reportedly warning he may have been a danger to himself.

Garcia worked as a property custodian at the Kansas City National Security Campus, which manufactures nonnuclear components for nuclear weapons.

He had a top security clearance at the facility, which would allow him wide access.

A researcher with NASA’s Jet Propulsion Laboratory, Frank Maiwald, died on July 4, 2024, at 61, in Los Angeles.

According to Maiwald’s obituary, he specialized in space research.

“Frank managed the development of the SBG-VSWIR instrument and had previously overseen the successful delivery of two instruments for the AMR-C program,” the obituary said. “His roles included serving as a technical group supervisor and contributing to various significant projects such as AMR/SWOT, COWVR, AMR/Jason 3, and HIFI.”

No public cause of death has been provided.

On Feb. 16, Carl Grillmair was shot to death on his front porch. He was an........

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