A city of significance

It was Rock's second shift at the nuclear power plant control site. During his first, no one there knew where the plant was, but this time his coworkers seemed and appeared far more expert. A man in a white lab coat told him the facility they controlled was located in Columbus, Ireland.
Rock had never heard of Columbus, Ireland, but he could tell from aerial photographs on display in the office that it was a city of significance. He was particularly impressed by photos of the sprawling, massive plant.