But he walked past his bunk and quietly sank down and slid under the last bunk, where the uncovered vent awaited him. His towel remained on the floor under the bunk, so that if anyone woke enough to notice that Bean's bunk was empty, they would see that his towel was missing and assume he had gone to the toilet.
It was no less painful this time, sliding into the vent, but once inside, Bean found that his exercise had paid off. He was able to slide down at an angle, always moving slowly enough to make no noise and to avoid snagging his skin on any protruding metal. He wanted no injuries he'd have to explain.
In the utter darkness of the air duct, he had to keep his mental map of the station constantly in mind. The faint nightlight of each barracks cast only enough light into the air ducts to allow him to make out the location of each vent. But what mattered was not the location of the other barracks on this level. Bean had to get either up or down to a deck where teachers lived and worked. Judging from the amount of time it took Dimak to get to their barracks the rare times that a quarrel demanded his attention, Bean assumed that his quarters were on another deck. And because Dimak always arrived breathing a little heavily, Bean also assumed it was a deck below their own level, not above--Dimak had to climb a ladder, not slide down a pole, to reach them.
Nevertheless, Bean had no intention of going down first. He had to see whether he could successfully climb to a higher deck before getting himself potentially trapped on a lower one.
So when he finally--after passing three barracks--came to a vertical shaft, he did not climb down. Instead, he probed the walls to see how much larger it was than the horizontals. It was much wider--Bean could not reach all the way across it. But it was only slightly deeper, front to back. That was good. As long as Bean didn't work too hard and sweat too much, friction between his skin and the front and back walls of the duct would allow him to inch his way upward. And in the vertical duct, he could face forward, giving his neck a much-needed respite from being perpetually turned to one side.
Downward was almost harder than upward, because once he started sliding it was harder to stop. He was also aware that the lower he went, the heavier he would become. And he had to keep checking the wall beside him, looking for another side duct.
But he didn't have to find it by probing, after all. He could see the side duct, because there was light in both directions. The teachers didn't have the same lights-out rules as the students, and their quarters were smaller, so that vents came more frequently, spilling more light into the duct.
In the first room, a teacher was awake and working at his desk. The trouble was that Bean, peering out of a vent screen near the floor, could not see a thing he was typing.
It would be that way in all the rooms. The floor vents would not work for him. He had to get into the air-intake system.
Back to the vertical duct. The wind was coming from above, and so that was where he had to go if he was to cross over from one system to another. His only hope was that the duct system would have an access door before he reached the fans, and that he would be able to find it in the dark.
Heading always into the wind, and finding himself noticeably lighter after climbing past seven decks, he finally reached a wider area with a small light strip. The fans were much louder, but he still wasn't near enough to see them. It didn't matter. He would be out of this wind.
The access door was clearly marked. It also might be wired to sound an alarm if it was opened. But he doubted it. That was the kind of thing that was done in Rotterdam to guard against burglars. Burglary wasn't a serious problem on space stations. This door would only have been alarmed if all doors in the station were fitted with alarms. He'd find out soon enough.
He opened the door, slipped out into a faintly lighted space, closed the door behind him.
The structure of the station was visible here, the beams, the sections of metal plating. There were no solid surfaces. The room was also noticeably colder, and not just because he was out of the hot wind. Cold hard space was on the other side of those curved plates. The furnaces might be located here, but the insulation was very good, and they had not bothered to pump much of that hot air into this space, relying instead on seepage to heat it. Bean hadn't been this cold since Rotterdam . . . but compared to wearing thin clothing in the winter streets with the wind off the North Sea, this was still almost balmy. It annoyed Bean that he had become so pampered here that he even cared about such a slight chill. And yet he couldn't keep himself from shivering a couple of times. Even in Rotterdam, he hadn't been naked.
Following the ductwork, he climbed up the workmen's ladderways to the furnaces and then found the air-intake ducts and followed them back down. It was easy to find an access door and enter the main vertical duct.
Because the air in the intake system did not have to be under positive pressure, the ducts did not have to be so narrow. Also, this was the part of the system where dirt had to be caught and removed, so it was more important to maintain access; by the time air got past the furnaces, it was already as clean as it was ever going to get. So instead of shinnying up and down narrow shafts, Bean scrambled easily down a ladder, and in the low light still had no trouble reading the signs telling which deck each side opening led to.
The side passages weren't really ducts at all. Instead, they consisted of the entire space between the ceiling of one corridor and the floor of the one above. All the wiring was here, and the water pipes--hot, cold, sewer. And besides the strips of dim worklights, the space was frequently lighted by the vents on both sides of the space--those same narrow strips of vent openings that Bean had seen from the floor below on his first excursion.
Now he could see easily down into each teacher's quarters. He crept along, making as little noise as possible--a skill he had perfected prowling through Rotterdam. He quickly found what he was looking for--a teacher who was awake, but not working at his desk. The man was not well known to Bean, because he supervised an older group of launchies and did not teach any of the classes Bean was taking. He was heading for a shower. That meant he would come back to the room and, perhaps, would sign in again, allowing Bean to have a chance at getting both his log-in name and his password.
No doubt the teachers changed passwords often, so whatever he got wouldn't last long. Moreover, it was always possible that attempting to use a teacher's password on a student desk might set off some kind of alarm. But Bean doubted it. The whole security system was designed to shut students out, to monitor student behavior. The teachers would not be so closely watched. They frequently worked on their desks at odd hours, and they also frequently signed on to student desks during the day to call on their more powerful tools to help solve a student's problem or give a student more personalized computer resources. Bean was reasonably sure that the risk of discovery was outweighed by the benefits of snagging a teacher's identity.
While he waited, he heard voices a few rooms up. He wasn't quite close enough to make out the words. Did he dare risk missing the bather's return?
Moments later he was looking down into the quarters of . . . Dimak himself. Interesting. He was talking to a man whose holographic image appeared in the air over his desk. Colonel Graff, Bean realized. The commandant of Battle School.
"My strategy was simple enough," Graff was saying. "I gave in and got her access to the stuff she wanted. She was right, I can't get good answers from her unless I let her see the data she's asking for."
"So did she give you any answers?"
"No, too soon. But she gave me a very good question."
"Which is?"
"Whether the boy is actually human."
"Oh, come on. Does she think he's a Bugger larva in a human suit?"
"Nothing to do with the Buggers. Genetically enhanced. It would explain a lot."
"But still human, then."
"Isn't that debatable? The difference between humans and c