Even before rescuers discovered the charred remains of NASA engineer Joshua LeBlanc inside his burned Tesla, his family had alerted authorities to his unexplained vanishing. The 29-year-old electrical engineer, who focused on nuclear propulsion at NASA’s Huntsville, Alabama research lab, skipped work uncharacteristically and left his phone and wallet behind, prompting abduction fears. Vehicle tracking showed the car parked at a local airport for four hours on the morning of July last year before heading toward his office. It then crashed on a rural road and erupted in flames.
A Pattern of Suspicious Cases
LeBlanc is not alone. At least 11 individuals tied to U.S. space and nuclear programs have vanished or died under unusual circumstances in recent years. Several disappeared during routine walks, raising alarms among officials and experts.
Monica Reza, 60, director of NASA’s Jet Propulsion Laboratory Materials Processing Group, vanished last June while hiking in California’s Angeles National Forest. She developed a super-alloy for rockets during a hike with friends. One companion last saw her 30 feet behind, smiling and waving, but she disappeared moments later. Extensive searches yielded no trace.
Retired U.S. Air Force Major-General William Neil McCasland, 68, also vanished after a walk. Last seen by his wife Susan on February 27 near Albuquerque, New Mexico, he left in hiking boots with a backpack, wallet, and .38 revolver—but no phone, glasses, or smartwatch. A gray Air Force sweatshirt found a mile away could not be confirmed as his. A massive search, including door-to-door checks of 700 homes, has found nothing.
McCasland commanded the Air Force Research Laboratory at Wright-Patterson Air Force Base, overseeing classified space weapons, and investigated UFOs post-retirement. He also led NASA’s Space Vehicle Directorate and worked at Kirtland Air Force Base.
Other Key Disappearances
- Melissa Casias, 53, administrative assistant at Los Alamos National Laboratory, vanished four days after Reza. She left her phones, car, keys, and purse at home in Ranchos de Taos, New Mexico, with data erased. Last seen walking a highway three miles away.
- Anthony Chavez, 78, retired Los Alamos nuclear scientist, disappeared from a walk, leaving wallet and phone behind.
- Steven Garcia, 47, security guard at a Kansas City National Security Campus facility in New Mexico, vanished from Albuquerque carrying only a handgun.
Unexplained Deaths
Several deaths add to the concerns:
- Nuno Loureiro, 47, plasma physicist and nuclear scientist, shot dead at his Boston-area home last December. The shooter, a former Brown University classmate, later died by suicide.
- Carl Grillmair, 67, astrophysicist at Caltech with NASA JPL ties, killed on his Llano, California porch in February. A local man faces charges; motive undisclosed.
- Lt. Jaime Gustitus, 25, Air Force Research Laboratory officer, died in a murder-suicide last October at Wright-Patterson. Coworker Jacob Prichard killed his wife Jaymee before taking his own life.
- Michael Hicks, 59, JPL senior scientist on asteroid deflection and Deep Space 1, died mysteriously in July 2023; no autopsy public.
- Frank Maiwald, 61, award-winning NASA spectrometer expert and Hicks colleague, died in undisclosed circumstances the next year.
Government and Expert Response
The Trump administration has taken notice. White House Press Secretary Karoline Leavitt announced discussions with federal agencies last Wednesday. The FBI now leads a multi-agency probe into the cases.
Former FBI Assistant Director Chris Swecker highlighted suspicions: “These are scientists who have worked in critical technology.” He urged FBI involvement, noting hostile nations might target them for intelligence.
Manifested Search Team linked Casias to McCasland via Los Alamos-Kirtland collaborations. Rep. Eric Burlison called the vanishings “deeply concerning,” stressing national security ties and odd patterns like abandoning keys and phones.
Rep. Tim Burchett spotted a pattern, including extraterrestrial spacecraft research links: “I think we ought to be paying attention to it.”
McCasland’s wife countered speculation on Facebook, denying dementia or relevance of his classified access, insisting no special UFO knowledge.
As NASA pushes Artemis missions amid China’s lunar advances, geopolitical tensions echo the Cold War. Foreign actors like China, North Korea, and Iran have targeted U.S. tech experts before. Skeptics note NASA’s 60,000 employees make coincidences possible, but the clustering of similar cases fuels debate.
