You are in the CarrTracks website Picture Gallery.
NS Junction was where the original Norfolk Southern crossed the Norfolk & Western. The Norfolk Southern had a pier in South Norfolk near the point where the East Branch of the Elizabeth River joined the North Branch. North of the NS Junction the Norfolk Southern had a line that ran parallel to the N&W on its east side to a drawbridge over the North Branch of the Elizabeth River to access Norfolk Union Station. When the Norfolk Union Station was torn down in 1961, this drawbridge was opened permanently.
N&W engine 29 is moving a block of cars out of the Portlock Yard by NS Tower in July 1976.
N&W Extra 1547 East is bringing a loaded coal train into Norfolk on a hazy day in July 1976. If I remember correctly, the addition on the back of the tower was a much needed rest room.
Norfolk and Portsmouth Belt Line engine 113 is approaching NS Tower with interchange traffic for the old Norfolk Southern yard in South Norfolk. This train came out of Portsmouth. Disk 125