sentences:  Large shipments can move from Decatur to the Atlantic Ocean via the Tennessee River to the Mississippi River and the Gulf of Mexico.The United States builds some of its space launch vehicles in Decatur (United Launch Alliance vehicles only), and ships them to both Cape Canaveral and Vandenberg Air Force Base via this water route.Decatur has 2 railroads, the Norfolk Southern Railway, and CSX Transportation (CSX) main line, the S&NA North Subdivision (Nashville to Birmingham).