The US Air Force thought it might be a lady's sun hat.
There are many UFOs---e.g., flocks of geese, Venus---but there are NO UFOs.
Credit/Permission:
George Stock (fl. 1950s),
1952
(uploaded to Wikipedia
by User:Bach01,
2007) /
Public domain.
Image link: Wikipedia:
File:PurportedUFO2.jpg.
Local file: local link: ufo_new_jersey.html.
File: Art_u file:
ufo_new_jersey.html.