The disappearance of William “Neil” McCasland, a retired Air Force major general, sparked a wave of online speculation in early 2026 that quickly evolved into one of the year’s most unfounded conspiracy theories. McCasland, 68, was last seen on the morning of Friday, February 27, 2026, near his residence in the Quail Run Court NE area of Albuquerque, New Mexico, according to the Bernalillo County Sheriff’s Office. His case prompted a Silver Alert, but no evidence has emerged to support claims of abduction or foul play tied to his prior perform in aerospace research.
Despite the lack of credible evidence, social media users and certain commentators began linking McCasland’s disappearance to a series of other cases involving scientists and technical professionals who had either died or gone missing over several years. These claims gained traction when figures such as House Oversight Committee Chairman James Comer expressed concern about what he described as “11 missing scientists,” suggesting foreign adversaries like China, Russia, or Iran might be involved. The narrative was further amplified when President Donald Trump, speaking to Fox News reporter Peter Doocy on the White House lawn, stated he had recently been in a meeting to discuss the matter, with Press Secretary Karoline Leavitt confirming the administration would address “legitimate questions about these troubling cases.”
But, a close examination of the individuals cited in the circulating list reveals no coherent pattern that would support a coordinated conspiracy. The cases span nearly four years, beginning with the death of Amy Eskridge in June 2022, followed by the 2025 disappearance of Monica Reza, an advanced-materials researcher at NASA’s Jet Propulsion Laboratory (JPL), who vanished even as hiking near Los Angeles. Other names on the list include a physicist at MIT who was murdered in December 2025 by a former classmate in an incident that also claimed the lives of two Brown University undergraduates, and Jason Thomas, a Novartis chemical biologist whose death was attributed to personal distress following the loss of both parents.
Melissa Casias, an administrative assistant at Los Alamos National Laboratory who went missing in 2025, was not a scientist, and her disappearance was linked by her daughter to significant personal problems. Eskridge, whose 2020 YouTube appearance showed her describing paranoid delusions and claiming to be followed by a car with a changing license plate, died in June 2022. Two JPL-affiliated astrophysicists in their 60s on the list may have died of natural causes, consistent with annual mortality rates for Americans in that age group.
Official investigations have found no evidence connecting these cases. The Bernalillo County Sheriff’s Office continues to treat McCasland’s disappearance as an active missing person investigation, with no indication of criminal activity at this stage. The FBI has not opened a federal case related to McCasland, and no agency has confirmed any link between his disappearance and the other incidents cited online. Local authorities in New Mexico and California have processed each case according to standard procedures, with causes of death or circumstances determined individually.
The spread of the conspiracy theory highlights how isolated tragedies can be misinterpreted when viewed without proper context. Experts in risk analysis and misinformation note that clustering illusions—the tendency to perceive meaningful patterns in random data—often drive such narratives, particularly when amplified by partisan figures and algorithm-driven social media. No credible intelligence or law enforcement assessment has validated the claim that foreign actors are targeting U.S. Scientists.
As of April 2026, the search for William McCasland remains ongoing. The Bernalillo County Sheriff’s Office urges anyone with information to come forward and directs the public to official channels for updates. Families of those involved continue to seek answers through legitimate investigative processes, not speculative narratives.
For the latest verified information on the McCasland case, the public can consult the Bernalillo County Sheriff’s Office website or contact their missing persons unit directly. Responsible sharing of unverified claims only complicates genuine efforts to locate missing persons and understand the causes of untimely deaths.