16S Return to Service Contract Engineer Greg Sandlin, left, welcomes the group of AEDC retirees during their recent visit while Air Force Project Manager Paul Wright (standing, third from left) looks on. The retirees, who all worked at the 16-foot Supersonic (16S) wind tunnel during the early years of the tunnel, were invited to Arnold Air Force Base to offer advice to the team currently working to return 16S to service. (U.S. Air Force photo/Bradley Hicks)