Ben Rohrbach, chief of the U.S. Army Corps of Engineers Nashville District Hydrology and Hydraulics Branch, explains how the Corps manages the Cumberland River System during a Silver Jackets meeting April 9, 2014, at Old Hickory Dam in Old Hickory, Tenn. Silver Jackets is a program that promotes cohesive solutions and synchronizes plans and programs between local, state and federal agencies. (USACE photo by Leon Roberts)