stick. One of the layers led down at an angle; following it, Luke found an opening in the rock that seemed to lead deep into the mountain.
A cave, Luke thought, struggling to remember definitions and explanations heâd memorized for tests, never expecting the knowledge to have any use in the real world. Caves have a constant temperature, summer and winter. People used to live in caves.
Luke had found his shelter.
He crawled in, keeping his head down because the ceiling of the cave was only four or five feet above the ground. But it was warmer the farther he got from the opening. He slid back as far as he could go and still see, and he curled up against a wall of rock. He felt safer than heâd felt at any time since heâd joined the Population Police, maybe any time since the Government had torn down the woods behind his familyâs house.
He was just beginning to drift off to sleep when he heard the gunfire start up again.
CHAPTER SIX
T he gunshots didnât sound nearby, but there were so many of them. When heâd been running away from Chiutza, heâd heard a pop! pop! pop!  . . . Three or four shots. That had been frightening enough, and maybe in his fear and desperation heâd miscounted or misheard.
This gunfire was even more terrifying, because it sounded like dozens of guns all firing at once, and firing again and again and again.
War, Luke thought, straining again to remember a concept heâd studied in school and never expected to encounter for real. Lots of people fighting.
Lukeâs first instinct was to curl up more tightly in the safety of his cave, his knees against his chin, his body protected by thick rock from any and every bullet. He was willing to slide on into sleep, just so he wouldnât have to hear the sounds of anyone elseâs struggle.
But then, unbidden, another memory forced its way into his mind: Jen arguing with him the day before she died.
You can be a coward and hope someone else changes the world for you. You can hide up in that attic of yours until someone knocks at your door and says, âOh, yeah, they freed the hidden. Want to come out?â Is that what you want?
Sheâd been trying to get him to come to the rally with her, the one protesting for third childrenâs rights. Sheâd yelled at him that if he didnât play a role in seeking his own freedom, heâd always regret it: When you donât have to hide anymore, even years from now, thereâll always be some small part of you whispering, âI donât deserve this. I didnât fight for it. Iâm not worth it.â And you are, Luke, you are. . . .
Substitute the word âcaveâ for âatticâ and she might as well be arguing with him now. He shivered with the same kind of chills he would have felt if Jenâs ghost had appeared to him and urged, Get out of this cave this instant! Go and fight in that war!
âStop,â he muttered, pressing his hands over his ears, as if that could shut out a voice he heard only in his own mind. âWhy should I listen to you? Itâs not like your rally did any good. It only got you killed. Do you want me to die too?â
But he couldnât really argue that Jenâs rally had been useless. So much had happened since then. Luke himself would never have gotten his fake I.D. and left home if it hadnât been for Jen and her rally. He never would have gone to Hendricks School or met any of his friends there. He never would have helped a boy named Smits come to terms with his brotherâs death. He never would have infiltratedPopulation Police headquarters, never tried to make a difference in the world, never ended up here in this cave.
And thatâs supposed to convince me? he wondered.
Still, he took his hands off his ears and crawled back toward the caveâs opening. Peeking out, he could see nothing but trees, a peaceful scene. But the sounds of gunfire were