This lady had raised two kids and spent her entire married life as a military spouse and was not inclined to tell tall tales or hallucinate or imagine much anything out of the ordinary - ever.
She said it did not come near her - I guess she was cooking breakfast or making coffee and she was in the kitchen and saw it all first hand.
The one we saw must have been at least 15 feet in diameter. all the rotating arrows of electricity rotating round and round in a left to right direction.
Never seen anything since.