The Budapest file is unreadable
CIA, Budapest, Hungary, 1957.
By its catalog title this is a CIA record about unknown flying objects seen over Budapest, but the scanned text is unreadable OCR noise with no usable body. Only a garbled header survives. The honest entry is that the title promises a sighting the document itself cannot back up, so it should not be used as evidence without a better scan.
∗ The available text is too thin or garbled to support much analysis.
open the original, on war.gov ↗