Overview
Retired U.S. Air Force Maj. Gen. William “Neil” McCasland remains missing after leaving his Albuquerque, New Mexico, home on Feb. 27, 2026. The 68-year-old former commander of the Air Force Research Laboratory was last seen at about 11:10 a.m., according to the timeline described in the report. His wife reportedly returned from a medical appointment at approximately 12:04 p.m. and found that he was gone.
The circumstances of the disappearance have prompted public speculation, particularly because several personal items were reportedly left behind. McCasland’s phone, glasses and wearable devices were found at the residence, while his wallet, .38-caliber revolver and red backpack remain unaccounted for, according to the original summary. Search efforts have included bloodhounds and helicopter-mounted infrared equipment. The only reported physical clue was a gray U.S. Air Force sweatshirt discovered more than a mile from his home.
The Inactive X Account
The report focuses on an anonymous, verified X account known as @TMBSPACESHIPS, which describes itself as “Electric Propulsive Spacecraft.” The account’s final post was made on Feb. 27 and it has reportedly remained inactive since then. That timing, combined with the account’s claim that it was operated by a retired Air Force veteran with a doctorate in engineering, has led some observers to suggest a possible connection to McCasland.
The account posted technical material about advanced propulsion, fusion reactors and alleged “antigravity” systems. It also claimed that the U.S. government had possessed related technology since 1953. However, no publicly established evidence demonstrates that McCasland operated the account or had any role in its posts. Similarities between the account’s stated background and McCasland’s professional history are circumstantial and do not establish identity.
Claims About Aerospace Technology
Among the account’s more notable posts was a hand-drawn schematic referred to as the “Ion Pumpy Thing,” which independent researcher Ashton Forbes characterized as authentic. The account also rejected extraterrestrial explanations for unidentified aerial phenomena, arguing instead that some reported UFOs could involve advanced human technology, including concepts allegedly derived from reverse-engineered Nazi-era physics.
Forbes, who has promoted theories involving plasma propulsion and the disappearance of Malaysia Airlines Flight 370, reportedly interacted with the account. Those claims remain disputed and have not been validated by publicly available scientific or governmental evidence. The report also references musician and UAP investigator Tom DeLonge, whose name appeared in 2016 WikiLeaks material concerning alleged consultations with McCasland. The nature and significance of any such contact are unclear.
Broader “Missing Scientists” Narrative
The video places McCasland’s disappearance within a broader theory involving scientists and engineers connected to nuclear research, fusion energy and advanced sensing programs. It cites researcher Amy Eskridge and claims that the FBI is examining the deaths or disappearances of at least 10 other scientists. Those broader connections require independent verification, and the available material does not establish that the cases form a coordinated pattern or involve an “insider” disclosure network.
At present, authorities have not publicly linked McCasland’s disappearance to the X account, classified aerospace programs or any alleged effort to reveal suppressed technology. The case remains unresolved, and theories that he voluntarily disappeared or was targeted by state actors are speculative. The most firmly established facts are that McCasland is missing, the account went inactive on the same day, and no evidence publicly confirms a relationship between the two events.
