Project Blue Book Case #361. On April 28, 1949, an unidentified object was observed over Tucson, Arizona — the fifth Blue Book unknown from this desert city near Davis-Monthan AFB (joining Cases #384, #1964, #2048, and #2105). With five cases spanning 1949 to 1952, Tucson held the remarkable distinction of producing more Blue Book unknowns than virtually any comparable city in the database.
The April 1949 sighting was the earliest chronologically, occurring during the Project Grudge era. Davis-Monthan's SAC mission and the surrounding desert test ranges provided military context, while the clear Arizona atmosphere provided optimal observation conditions.
The case was classified "Unknown."