Mario,
Plane ufo, rainbow or clouds maybe? You ever see the Twlight Zone?
William Shatner (Captain Kirk of the u.s.s. enterprise)
He did a a plot on a plane, rainy dark night, heavy rains, sitting in airplane, looking out window saw a small person, creature near engine. Looked like he was going to do something to plane. No one else saw what he did. Maybe that ufo midget too. Heeeeee….