"There's been a tremendous amount of work that's been done that you can't see in Columbia"

In this quote, Duane G. Carey is likely describing the behind-the-scenes efforts and progress that have actually been made in the city of Columbia. He recommends that there has been a significant amount of work done, but it might not be instantly visible to the general public eye. This could consist of things like facilities improvements, policy changes, or community initiatives that have actually been carried out to improve the city. Carey's declaration highlights the concept that there is typically more going on than meets the eye, which there is a hidden depth to the progress and advancement of a city like Columbia.