VLBI image of S5 1928+738 observed on 28 Aug. 2003 and obtained by Lister & Homan (2005). The VLBI jet turns after about 10 mas, and the asymptotic direction is characterized by ΔΞ ≈ 182°, which corresponds to the direction of the large-scale jet observed with the VLA (Murphy et al. 1993). This long-term turn is characteristic of the slow rotation of the BBH system around a third black hole or a second BBH system. We indicate the positions of the two stationary components Cg and CS, which are associated with the two black holes of the BBH system Cg-CS, the position of the black hole BHC6, which ejected components C5, C6, and C7b, and finally, the positions of components C1, C6, and C8 whose ejections have been fitted.