To clarify, since Jb asked a good question, they are in a garrison facility that is still under construction in the wake of the Great Crusade. They need to figure out how to blow up the governor's residence, or just get in there and kill the governor. There are multiple options in terms of using the garrison's vehicles and armory to achieve that. If you want to come up with a fun way to off the Governor, by all means, let's do that.