MEMPHIS, Tenn. (AP) – Officials say a U.S. Army Corps of Engineers river vessel will be named in honor of a civil engineer who worked in the Memphis division before he died of cancer last year. Corps officials say they plan to christen the Survey Vessel Chasteen in a ceremony Tuesday on the Mississippi River. The vessel will be named after Darian S. Chasteen, who worked for 30 years on navigation, flood control and environmental stewardship in the expansive Memphis district. Corps officials say Chasteen played a large role in the advancement of river engineering science to help shape the Mississippi River into a safe, navigable waterway.