Project Blue Book Case #3155. On August 6, 1954, yet another unidentified object was observed over San Antonio — the eighth Blue Book unknown from America's military aviation capital. Eight cases across 1952-1954 made San Antonio the most prolific source of repeat unknowns from any conventional military area in the Blue Book database, rivaling only Albuquerque's nuclear corridor.
The persistence across three years and multiple investigation eras (pre-wave, wave, post-wave, and post-Robertson Panel) demonstrated that San Antonio's unknowns were not merely a wave-dependent phenomenon. The case was classified "Unknown."