Allied fighter pilots have reported seeing controlled balls of light interfering with their flight paths in the skies for the last three years.
And they were simply balls of light that rose up out of the countryside that appeared to have some kind of intelligent control that were able to follow allied aircraft on their flight paths and intervene with them and interact with them and then fly off into the distance.
Mieta is the mysterious high-voltage physicist that Townsend-Brown's task force reportedly helped capture for the Allied forces.