Carter and The Wind

Okay, so this past summer Carter has developed some kind of phobia of the wind. If he sees the trees moving out the window before we even step outside, the kid has a death grip on my hand and starts freaking out! I have no idea how this all started, but it's really not the greatest. Even camping last month was a trial.... any time the wind picked up, the little guy was running to me or Rob to "save" him from the wind. Why in the world is my son afraid of the wind and how do I break him of it!