So, TIE Fighter, Battle 7, Mission 3, destroying the Mon Cal Cruiser is no problem, but the ISD Garrett *will not* fire on enemies. It will launch wave after wave of bombers, all of which get destroyed before getting a shot off, leaving me to take on the VSD on my own (nigh impossible once those missiles turn on me), and when Zaarin and the rebels show up, they straight up murder the ISD because it will not fire a single shot.

Is this supposed to happen? Is there a way around it without turning on cheats?