So after a lot of discussion and talking through of scenarios, they agreed that Jules would go up for a look-see. But as a precaution T.R. and Saskia would station themselves at Minus Six, next to the open hatch. They had pre-stocked the combustion chamber with water, snacks, lights, respirators, and a bucket to pee in. Above, on Minus Four, similar preparations had been made in the pump chamber. Conor would hang out up there. When Jules went topside, he’d be carrying a plastic water bottle. If he saw anything bad, he’d simply drop it down the shaft. A few seconds later it would slam into something near Level Zero and burst open, a signal they could not fail to notice. T.R. and Saskia would immediately take refuge in the combustion chamber. Conor would wait a bit to give Jules a chance to come down the rope, whereupon they’d seal themselves up in the pump chamber.