[Jamestown1630]

I only remember one story, where they were believed to have been associated with the disabling of missiles.

Were there others?

[cgbg]

1967—two separate events:

https://www.meer.com/en/74766-the-malmstrom-nuclear-ufo-incident-1967-returns

An earlier 1962 incident is discussed here:

https://legis.senado.leg.br/sdleg-getter/documento?dm=9177522&ts=1658782546895&disposition=inline