Saturday marks five years since 19 Granite Mountain Hotshots were killed fighting the Yarnell Hill Fire. To honor them, the City of Prescott, where the men were based, will unveil a tribute center. It’s very personal. It features biographies and photos of the fallen crew, and thousands of items left by the grieving public at the hotshots’ fire station. In this audio postcard, we hear from some of the people who designed the tribute center.