I'm going to be destroying a habitat/city on Mars in my campaign (not sure which one yet). The purpose of this is to create a system-wide event that the PCs were directly involved with and also to show that no one is really safe anywhere. Also, it will inspire such a hate and loathing in the perpetrators that it will inspire a system-wide manhunt. So my query is this: how should I do it? Orbital bombardment by asteroids? It can't be as simple as a fleet turning up and blowing it up. The perpetrators are a small group of highly-skilled specialists, not an army. Anyway, it's a work in progress. Any ideas would be appreciated.
—That which doesn't kill you usually succeeds on the second attempt.