On October 21, 1978, Australian pilot Frederick Valentich was flying from Melbourne to Kings Island. The conditions were favorable and his aircraft was in good shape. However, he never reached his destination. Shortly after takeoff, Valentich vanished without a trace. What makes this case particularly intriguing is his final radio transmission to air traffic control, where he reported seeing an unidentified flying object (UFO) and expressed concern about its presence. His plane and body were never found, adding to the mystery surrounding his disappearance.