Kevin Jasper (Right), U.S. Army Corps of Engineers Nashville District’s Integrated Project Office interim chief, talks with Doug Underwood, Erwin Marine Sales, Inc., while overlooking ongoing construction March 20, 2023, of a navigation lock chamber. The Nashville District is building a larger navigation lock at Chickamauga Lock on the Tennessee River in Chattanooga, Tennessee. Underwood took part in a roundtable and project tour at the invitation of the Corps of Engineers. (USACE Photo by Lee Roberts)