A pair of F4U Corsairs encouter a Foo Fighter - when closing in they discover that it appears to be a russian secret weapon.

Modeled and rendered in C4D.

From wikipedia:
"The term foo fighter was used by Allied aircraft pilots in World War II to describe various UFOs or mysterious aerial phenomena seen in the skies over Europe and the Pacific theatre. Contemporary witnesses often assumed that the foo fighters were secret weapons employed by the enemy. Despite these fears, foo fighters (whatever they might have been) were apparently never reported to have harmed or tried to harm anyone"