What happened
An object that looked as big as a hen's egg flew very fast, zigzagged, hovered and turned, then shot upward after 17 minutes.
"big as a hen's egg"Shape words from the Project Blue Book summary
Witnesses
G. U. Donadio, translator for an export-import firm
Explanation
Unresolved
No explanation has been found.
Sources
- Patrick Gross, Project Blue Book unknowns of 1957ufologie.patrickgross.org
- The Black Vault, Project Blue Book unknown case files, complete listtheblackvault.com
Filed by Project Blue Book as unidentified.