reply to post by NGC2736
Yes... there is not much to see in this document.
Maybe there some pages missing in this pdf document.
The one-liner explanation must come from a collection of reports.
The following picture has been taken from
UFOdna.com
This would be the observed image at the time:
We got a few documents about the “Twinkle Project”.
I'm sure we are able to link them at a later stage ...
Here is a summary from
PROJECT 1947

Early in 1950 the Geophysics Research Division received a directive to investigate peculiar light phenomena that had been observed in the skies of
the southwestern United States. Project Twinkle was established to check into these phenomena and their explanation.