What happened
A silver round object about 60 feet across, flat underneath with a raised front edge and an upside-down cone on top, flew level, hovered, pulled up hard and climbed steeply into the overcast in three to five minutes.
"round object with a flat bottom, raised front edge, inverted cone on top"Shape words from the Project Blue Book summary
A silver round object about 60 feet across, flat underneath with a raised front edge and an upside-down cone on top, flew level, hovered, pulled up hard and climbed steeply into the overcast in three to five minutes.
Experienced private pilot John Mark, flying a Navion; radar at Dayton tracked a very fast target in the same place
No explanation has been found.
Filed by Project Blue Book as unidentified.