Wendi, Annabelle and Nichoolas Czekanski, family of Col. Adam Czekanski, incoming commander for the U.S. Army Corps of Engineers Pittsburgh District, listen to him speak during the Pittsburgh District change of command ceremony at the Senator John Heinz History Center, in Pittsburgh, July 29, 2021. The change of command ceremony symbolizes the continuation of leadership and unit identity. It represents the transfer of responsibility and authority from one individual to another while continuing the mission. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)