The behavior and interactions of one or more core black holes is described for the mass density environment of the galaxy core and comparisons made between this environment and that of a large spherical stellar system typical of an active galaxy. Data is presented for a range of galaxy types in local galaxy clusters that indicates jetting with kinetic energy greater than 1055 ergs from a collapsed object or system of objects in the galaxy core may have occurred during the very early phase of development of the Milky Way but is unlikely in later epochs.