A tribute at a firehouse honors the nine men who did not return after 9/11. The tribute features a simple chalkboard that has become a significant piece of history. Firefighters and conservators are collaborating to preserve the names of their colleagues who were lost on September 11.

Further details about the preservation efforts and the story behind the chalkboard are available, providing a more in-depth look at this powerful piece of history and the tribute to those who were lost.