"We'll hope that he takes things at face value, and assumes we're at large in the ship somewhere, for a while at least," Johnny said. "That hole in the wall is going to set them back a couple of steps, too."
"But they'll sound the alarm, at least," Tom said.
"You bet they will! They'll have every man on the crew shaking down the ship for us. But they may not think of the ventilators until they can't find us anywhere else."
"But sooner or later they're bound to think of it."
"That's true," Johnny said. "Unless they keep seeing us in the ship. The way I figure it, this crew has been on battle stations plenty of times. They'll be able to search the whole ship in half an hour. We're just going to have to show ourselves ... at least enough to keep them searching."
"Well, what if they do think of the ventilators?" Greg said. "They'd still have a time finding us."
"Maybe, but don't underestimate Tawney. He might just mask up his crew and flood the tubes with cyanide."
They thought about that for a minute. There was no sound here but their own breathing, and the low chug-chug-chug of the pumps somewhere deep in the ship. Momentarily they expected to hear the raucous clang of the alarm bell, as some crew member or another walked into the lounge and found them gone. But so far there was no sign they had been discovered missing. "No," Johnny said finally, "if we just hide out in here, and hope for a chance at one of the scout ships, they'll find us eventually. But we've got three big advantages, if we can figure out how to use them. That fancy gun, for one. A way to get around the ship, for another ... and the fact that there's one more of us than they count on." He flipped on his pocket flash, began drawing lines on the dusty floor of the shaft. "My idea is to keep them so busy fighting little fires that they won't have a chance to worry about where the big one is."
He drew a rough outline-sketch of the organization of the ship. "This look right to you, from what you've seen?" he asked Tom.
"Pretty much," Tom said. "There are more connecting tubes."