National Guard conducts security assistance exercise at Old Hickory Dam
Spc. Darren Warfield from the Tennessee National Guard checks the identification of a U.S. Army Corps of Engineers employee at the Old Hickory Dam Powerhouse in Hendersonville, Tenn. Soldiers set up road blocks and patrolled the area June, 20, 2016 to protect the facility during a security assistance exercise in cooperation with the U.S. Army Corps of Engineers Nashville District.