The news about low-leveled zerg moving in a herd using the underground route to escape the middle and central regions was sent to all fleets. This is quite important news, this means that even low-level zergs could communicate with each other and move as one if needed. Everyone in the Federation knows that the Central and Middle regions had barriers blocking zergs from entering the outer region. This is because the outer regions are the resting place for those who regularly clean up the plant to stabilize the ecology's population.