Project Blue Book Case #1536. On July 22, 1952, a bright object was observed over Uvalde, Texas — a ranching community in the scenic Hill Country approximately 80 miles west of San Antonio. Uvalde's open ranchland and clear skies provided excellent observation conditions. Laughlin AFB in Del Rio was the nearest military installation. July 22, 1952, was during the peak week, between the two Washington radar weekends. The case was classified "Unknown."