Lenna Hawkins, deputy district engineer for the U.S. Army Corps of Engineers Pittsburgh District, passes the guidon to Col. Andrew Short, outgoing Pittsburgh District commander, during a 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)

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Photo by: Michel Sauret |  VIRIN: 210729-A-TI382-1019.JPG