Andrea L. Williams has been named Operations Division chief at the U.S. Army Corps of Engineers Memphis District. In that role she is responsible for the operation and maintenance of the district’s Physical Support Branch, including the Ensley Engineer Yard Marine Maintenance Center and the Mississippi River Regional Channel Improvement fleet, which includes the revetment Mat loading, grading, and clearing and snagging units, the dredge Hurley and its associated floating plant, the M/V Mississip...