What does it take to rebuild a community -- physically and psychologically -- from the ground-up? CNN's Kathleen Koch takes us on a personal journey as she explores these issues in her hometown of Bay St. Louis, Mississippi, which was devastated by Hurricane Katrina.

Behind the Scenes: 'Nothing could prepare me'
Gallery: Bay St. Louis ravaged by Katrina
Watch: CNN's Kathleen Koch returns to Bay St. Louis Watch: Residents face insurance nightmare