Don't want to flood the community page with my questions so I'll just post here again, but now I think I really am stuck in the battlefield puzzle. I use the guards for covering fire, but I've tried everything on everything and I can't see how I can progress. It feels like I should be able to use the balloon, because I needed cover to get over there, or one of Khai's powers to go over the trench but nothing seems to be working, nothing works on the balloon or the enemy troopers. Felt kinda sheepish missing the Adventure Game 101 solution to my previous problem, but this one's got me.