Col. Adam Czekanski, the outgoing commander of the U.S. Army Corps of Engineers Pittsburgh District, listens to a speaker during his farewell ceremony at the Senator John Heinz History Center in Pittsburgh, Aug. 4, 2023. The Pittsburgh District’s 26,000 square miles include portions of western Pennsylvania, eastern Ohio, northern West Virginia, southwestern New York and western Maryland. It supports commercial navigation on the Ohio, Allegheny, and Monongahela rivers, operating and maintaining 23 locks and dams across 328 miles of navigable waterways. In addition to navigation, Pittsburgh’s flood-damage reduction mission encompasses 16 multi-purpose reservoirs that have prevented an estimated $866 million in flood damages in 2022. (U.S. Army Corps of Engineers Pittsburgh District photo by Michel Sauret)