Army National Guard 111 N Hewitt Ave Rockwood, TN 37854 Phone : (865) 354-1343 Business Category National Security Tennessee State Government--tennessee Army National Guard, Co M 3rd Sqdn M 278th Armd Cav Regt 111 S Hewitt St Rockwood, TN 37854 Phone : (865) 354-1343 Business Category Government Offices-State Government Offices State & Local National Security Government Offices & Public Schools