No it doesn't mean that at all Dick. The towers primary function is surface movement control, not so much airborne control. In order to justify a manned tower factors such as, number of simultaneous movements, how congested the movement area is, surface visibility to name a few, if those issues are no longer present then there is no need for a manned tower. Now I don't know if that's the case in wagga or not, but we can't simply say because you have taken it away it's less safe.