"Shit," Marty says, as the others see it too. "Come on!"

The gang sets off for the plane at a jog, though everyone makes sure to keep fairly close to Doc. (Otherwise they're going to get a blast of Arctic air in the face.) "Please be okay, please be okay," Marty mutters as they head over. He can't imagine finding out Clark's mom has died, so soon after his dad. Alice is similarly pale with the prospect of this happening.