U.S. Air Force Staff Sgt. Holly Miller, an assistant team chief with the 211th Engineering Installation Squadron, feeds a spool of duct rod underground Nov. 14, 2017, at the 193rd Special Operations Wing, Middletown, Pennsylvania. Airmen from the 211th EIS ran the duct rod to pull fiber optic cables into the base’s new Resiliency Center. (U.S. Air National Guard photo by Staff Sgt. Tony Harp/Released)