Okay, so let's talk about coordinating some, as there would be a talk about it before arriving in Caldera at least. Right now it's definitely Ky and Hans that will go, Garen may wind up as well. A good suggestion is that the Swords focus on evacuating refugee when the time comes, and likely shoring up Caldera's own defenses. If Garen stays, there's someone Union-side to help manage things, but if not a handy NPC will do.