Not too sure about your Da Nang tower location but my reference's show it further down to the south on the old original pan, basically between those first 2 large hangars in your screenshot.
Originally the old French built tower was used for a short while before the US built their own wooden structured version which again was in time replaced with a more modern "concrete" structure.
All these US bases are very hard to depict accurately as they changed so much in the early years as various combinations of materials were used during construction then upgraded as need to suit newer aircraft coming the war zone, just the types and sizes of the revetments alone can be a complete nightmare