He hurried over and strained his eyes to see, but it was too dark to make anything out. He picked up one of the sealed boxes-it was lighter than he would’ve guessed-and moved back into the light, then set the box down on the metal grate of the floor. Leaning over, he finally got a good look.

There was a warning symbol plastered across the top, the kind that indicated the contents were some sort of biohazard. A label below the symbol said:

Virus VC321xb47

Highly Contagious

24 Darts, Extreme Caution

Mark suddenly wished he hadn’t touched the thing.

CHAPTER 7

Mark straightened up and moved a few feet away. He couldn’t believe he’d handled the box. He might even have opened it if he hadn’t brought it into the light first. For all he knew, those darts had broken during the flight of the Berg. Maybe the virus had even seeped through the small cracks in the container. Not to mention there were open boxes on the shelves, though they appeared to be empty.

He wiped his hands on his pants, stepped away even farther.

Clang. Clang. Clang.

Alec stopped, breathing heavily. “One or two more whacks and I think this baby will bust open. We need to be ready. Find any weapons?”

Mark felt sick. As if microscopic bugs had leapt from the box to his skin and were burrowing their way to his blood even as he stood there. “No, just a box holding darts filled with a deadly virus. Maybe we can throw some at them?” It was meant as a joke but somehow made him feel even worse as the words came out.

“What? A virus?” Alec repeated in a doubtful tone. He walked over and peered down at the box on the floor. “I’ll be… So that’s what they were shooting at us? Who are these people?”

Mark panicked. “What if they’re waiting on the other side of that door?” he asked. “Waiting to put darts in our necks? What are we even doing up here?” He could hear the rising alarm in his own voice and was ashamed of it.

“Calm down, boy. We’ve been in a lot tougher situations than this,” Alec answered. “Just find something-anything-you can get your hands on and bang away at somebody’s head if they come charging. You wanna let these people get away with dart-gunning some of our friends? We’re up here now. There’s no turning back.”

The fight in Alec’s voice made Mark feel better, more sure of himself.

“Okay. I’ll look.”

“Hurry!”

Mark had seen a wrench strapped to the wall near the sledgehammer. He ran over and grabbed it. He’d been hoping a real weapon might reveal itself, but the foot-long piece of metal would have to do.

Alec had the sledgehammer in his hands, ready to slam it against the beaten-up handle of the door. “You’re right that they might fire at us as soon as this pops open. Let’s not charge through like a couple of dumb gorillas. Get over there and wait for my command.”

Mark did as he was told, pressing his back against the wall on the other side of the door, holding the wrench tightly. “I’m ready.” Fear pulsed within him.

“All right, then.”

Alec lifted the sledgehammer high, then brought it crashing down against the handle. It took two more hits for the whole thing to finally break off with a crunch. One more swing and the door swung open, shooting outward and slamming into the wall on the other side. Almost immediately three darts cut through the air, swoosh, swoosh, swoosh, clanging off the far wall. Then there was the sound of something clattering against the floor, followed by footsteps running away. Just one person.

Alec held up a hand as if he thought Mark would go charging after the guy. Then he peeked around the edge of the doorframe.

“All clear. And the rat must’ve run out of darts, because he threw his gun on the ground. I’m beginning to think this Berg only has a few people on it. Come on, let’s go catch that weasel.”

Alec leaned out into the open a bit farther, sweeping his gaze back and forth one last time. Then he moved into the dimly lit area beyond. Mark took a deep breath and followed him into the hallway, kicking the dart gun away in disgust. As it clattered across the room and hit a wall, he pictured Darnell, that dart sticking straight out of his shoulder. Mark wished he had more than a wrench in his hands.

Alec held the sledgehammer in both fists, cocked at an angle as he crept through the narrow hallway. It was slightly curved, as if it followed the circular outer edge of the craft. Glowing panels like the one they’d seen in the hatch room were spaced about ten feet apart, providing the only light. They passed several doors, but each was locked when Alec tried them.

Mark battled his nerves as they walked, trying to be ready if anything jumped out at him. He was just about to ask Alec about the layout of a Berg-he remembered that the man had once been a pilot-when he heard a door slam up ahead, then more footsteps.

“Go!” Alec yelled.

Mark’s heart lurched and he broke into a sprint, following Alec down the curved passage. Mark could only catch a glimpse of a running shadow up ahead, but it looked like someone in one of the green suits they’d seen earlier, without the headgear. The person yelled something, but the words were indecipherable as they echoed off the walls of the hallway. It was definitely a man. Most likely the one who’d shot at them.

Engines revved all around them and the Berg jerked into motion, blasting forward in a rush of power. Mark lost his balance and crashed into a wall, bounced off, then tripped over Alec, who was sprawled on the floor. The two of them scrambled to their feet, grabbed their weapons.

“Cockpit’s right up there,” Alec yelled. “Hurry!”

He didn’t wait for a reply-the man bounded down the passage and Mark followed. They reached an open area with chairs and a table just as the man they were chasing disappeared through a round hatch into what had to be the cockpit. He started pulling the door closed, but Alec threw the sledgehammer just in time. It hit the wall next to the hatch and fell to the floor, blocking the door from closing. Mark hadn’t stopped-he ran past Alec and reached the cockpit first, leaning inside without letting himself stop to think about it.

He caught a quick glance of two pilot chairs, windows above wide panels full of instruments and dials and screens flashing information. One of the chairs was occupied by a woman frantically pressing buttons as the Berg shot forward, trees disappearing below them at an increasing rate. Mark had barely taken it all in when someone tackled him from the right, both of their bodies crashing to the floor.

Mark’s breath was knocked out of him as his attacker tried to pin him down. Then the man was whacked in the shoulder by Alec’s sledgehammer and was sent flying. He landed with a grunt of pain and Mark scrambled to his feet, struggling to suck air into his lungs. Alec grabbed the man by his green shirt and pulled him up close to his face.

“What’s going on here?” the former soldier shouted, spit flying.

The pilot continued to work the controls, ignoring the chaotic scene behind her. Mark stepped up to her, not sure what to do. He steadied himself and put all the authority he could into his voice.

“Stop this thing right now. Turn it back, take us home.”

She acted like she hadn’t heard him.

“Talk to me!” Alec was yelling at his man.

“We’re nothing!” the guy said through a pitiful moan. “We were just sent to do their dirty work.”

“Sent?” Alec repeated. “Who sent you?”

“I can’t tell you.”

Mark was listening to what was going on across the room. He was annoyed that the pilot had ignored his directions. “I said to stop this thing! Now!” He held up his wrench but felt completely ridiculous.

“Just following orders, son,” the lady replied. Not a hint of emotion in her voice.

Mark was searching for a comeback when the sound of Alec punching the man on the floor tore his attention away.