Maj. Gen. Jeffrey H. Holmes, deputy adjutant general for the Tennessee National Guard, and Lt. Col. Stephen Murphy, 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. (USACE photo by Leon Roberts)

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