National Guard conducts security assistance exercise at Old Hickory Dam
Soldiers with the with the Tennessee National Guard’s 269th Military Police Company, 117th Military Police Battalion, 194th Engineer Brigade, update Lt. Col. Stephen Murphy, U.S. Army Corps of Engineers Nashville District commander, during a security assistance exercise to protect the Old Hickory Dam Powerhouse and Switchyard in Hendersonville, Tenn., June 20, 2016.