AEDC Visitor Center holiday schedule announced Published Dec. 8, 2014 By Raquel March AEDC/PA ARNOLD AIR FORCE BASE, TENN. -- The Arnold Engineering Development Complex (AEDC) Visitor Center hours for the Christmas holiday period are set. According to Arnold Police Operations Officer, Michelle Frame, the Visitor Center and Gate 2 will be closed Dec. 25 - Jan. 1. Personnel who are working during this time and have an emergency need for a common access card (CAC) that would result in a work stoppage may contact the base Operations Center at 454-7752 for emergency assistance. Personnel requiring base access during this time who have lost or forgotten their base entry badge or CAC may contact the Base Defense Operations Center at 454-5662 to arrange for an Air Force Form 75 or a temporary badge as applicable. Both the AEDC Visitor Center and Gate 2 will re-open Jan. 2 at 6:30 a.m.