190213-A-SO401-1030
A sign indicates distances relative to the Deep Creek lock on the Dismal Swamp Canal, part of the Atlantic Intracoastal Waterway, Chesapeake, Virginia, Feb. 13, 2019. The U.S. Army Corps of Engineers is slated to replace three of eight chamber valves along the AIWW. (U.S. Army photo by Andria Allmond)