FBI Investigating Disappearances and Deaths of 10 Government Scientists with Nuclear Access

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The Trump administration has mobilized the FBI to investigate the mysterious disappearances and deaths of 10 U.S. government scientists and officials who had access to classified nuclear and aerospace information. Several of the individuals had overlapping professional connections, raising concerns about potential espionage. President Trump has pledged to get to the bottom of the situation, stating that 'no stone will be unturned' in the effort.

Why it matters

The disappearances and deaths of these high-level government scientists with access to sensitive national security information are deeply concerning, as they could indicate a potential breach of classified material or even a coordinated effort to target individuals with knowledge of critical nuclear and aerospace programs. The investigation will aim to uncover any potential links between the cases and determine if there are any national security implications.

The details

Since 2023, 10 scientists and senior officials with access to some of America's most closely guarded nuclear and space secrets have died or disappeared without a trace. The list includes retired Air Force Major General William 'Neil' McCasland, who vanished near Albuquerque in February 2026, and Monica Reza, a group manager at NASA's Jet Propulsion Laboratory who worked on rocket materials and went missing during a hiking trip in California in June 2025. Other cases involve Caltech astrophysicist Carl Grillmair, who was shot and killed outside his home in February 2026, and Steven Garcia, a government contractor at the Kansas City National Security Campus who has been missing since August 2025.

• In February 2026, retired Air Force Major General William 'Neil' McCasland disappeared near Albuquerque.
• In June 2025, Monica Reza, a group manager at NASA's Jet Propulsion Laboratory, vanished during a hiking trip in California.
• In February 2026, Caltech astrophysicist Carl Grillmair was shot and killed outside his home.
• In August 2025, Steven Garcia, a government contractor at the Kansas City National Security Campus, went missing.
• In May 2025, Anthony Chavez, a Los Alamos National Laboratory employee, vanished.

What they’re saying

What’s next

The FBI is actively working with all relevant agencies to holistically review all of the cases together and identify any potential commonalities that may exist. Authorities have not established any concrete connection among the cases, but some lawmakers have called for closer scrutiny of the disappearances.