What happened
Three or four dark, lens-shaped objects veered north and changed places in their formation during a ten-minute sighting.
"dark, lens-shaped"Shape words from the Project Blue Book summary
Three or four dark, lens-shaped objects veered north and changed places in their formation during a ten-minute sighting.
First Officer H. G. Gardner and an engineer flying Royal Dutch Airlines DC-4 PH-DBZ
No explanation has been found.
Filed by Project Blue Book as unidentified.