National Guard conducts security assistance exercise at Old Hickory Dam
Maj. Gen. Jeffrey H. Holmes, deputy adjutant general for the Tennessee National Guard, and Lt. Col. Stephen Murphy, U.S. Army Corps of Engineers Nashville District commander, confer June 20, 2016 during a security assistance exercise where soldiers set up a perimeter to protect the Old Hickory Dam Power House and switchyard and ensured only authorized personnel gained entry into the facility located in Hendersonville, Tenn.