Retired Major General William Neil McCasland disappeared from the Sandia Mountain foothills on 27 February 2026, leaving behind his phone, glasses, and wearable devices. McCasland, a former commander of the Air Force Research Laboratory (AFRL), has not been seen since. The disappearance has drawn attention due to similarities with Monica Jacinto Reza, a NASA Jet Propulsion Laboratory (JPL) engineer and co-inventor of the nickel-based superalloy Mondaloy, who vanished from the Angeles National Forest in June 2025.
Both cases share unusual circumstances: personal items were left behind, searches yielded minimal evidence, and no bodies have been recovered.
