A friend of mine has a 12 year old son. He was terrified, I mean TERRIFIED of storms and loud noises. Did I mention terrified?
He went to Scout camp where they had a whopper of a storm come rambling through. He toughed it out.
When he got home, a little storm was coming through and his mom wondered why he didn't head for the basement. He said, "Mom, that's just a little storm, nothing like the one at scout camp in a tent."
He came back a different young man.
I brought home a black kid from Cub Scout camp once. We didn't figure it out until after he had a bath. I had to drive all the way back to swap him.