This talk is about the speaker's recent research work which offers ideas on how a network of dynamical systems is affected by its network topology from the performance and stability perspective. Unlike many existing works, the present talk focuses on the interplay between network topology and 'local dynamics'. More specifically, the present talk is mainly concerned with two issues. The first one is about finding the most important link(s) in the network which affects the network's H-infinity performance measure, and the second one is about designing the link weights that maximize the network's stability margin (MIMO gain and phase margins). A vehicle network for formation flight will be used to demonstrate the discussion on the two issues.