I found the bus survivor, gathered the wood, and was tasked with saving the kids. For some reason I couldn't fit four girl scouts in the back of my truck, so I ran them all the way back to my base, fought the horde that arrived while I was hoofing it, then let the girls in. All four of them survived. I ran back to the bus... and there wasn't the survivor.
Did he die while I was escorting the kids? Why doesn't he just follow us back at the same time I'm escorting them?
Escort quests are pretty annoying, especially when I can't use my perfectly good vehicle, but it was frustrating to do all that work and not get the reward.