Newsweek has mapped the last known locations of several missing workers with ties to advanced research, including a retired Air Force general and a NASA‑linked aerospace engineer whose disappearances have drawn congressional attention. Among the missing are retired Air Force Major General William Neil McCasland , last seen February 27 in Albuquerque, New Mexico, and aerospace engineer Monica Reza , who disappeared in June while hiking in California. There has been no confirmation of a concrete