[Pepper manages a smile as Susan describes her powers. Considering that Pepper's seen her share of powerful beings lately thanks to the alien invasion and the formation of the Avengers, it's not quite as unbelievable to hear about.

When Susan offers reassurances, Pepper lets out a quiet laugh.]

Well, I'd hope so. You are walking right next to me. [Otherwise they would have a few issues to address.] I was concerned, though. Accidents involving radiation usually don't have good results. [On the environment or on people.]