A weather phenomenon filled the skies of Eastern Iowa Tuesday, and meteorologists say it's something we might not see again. �I thought I was going to see alien spaceships come down through the clouds," said Casey Dunagan. Some say it looked like a scene from the movie �Independence Day.� Others had more down-to-earth descriptions. It almost reminded me of ocean waves rolling in," said Suzanne Staab. I thought it looked like a nice frothy cream on a latt�," said Robin Morris. �Or sand dunes, the way they ripple," said Staab. �It was actually pretty neat looking. All of us commented on it," said Mike Webb. In case you missed the excitement Wednesday, clouds were the talk of the town. �We'll just call them wave clouds. That�s not actually a type of cloud. It�s just the way they looked," said TV9 Meteorologist Joe Winters.