I saw them when I was a kid in New England. Maybe the same ones that Crankin saw.
The first was in the late 1970s when I was in southeastern NH. It looked like a shimmering greenish curtain.
Then again in the mid 1980s in northestern MA. It looked like a yellowish glowing orb.

I have not seen them since.
Last year when there was a chance they might be seen at about the I-70-ish latitude we did drive out west just to the CO/UT line where it is dark, but we did not see them.