Unfazed, it barreled forward.

He dodged to the right.

This time he was too slow.

As he tried to turn away, his arm was yanked back, toppling him onto the hard rock. Suddenly his whole body was jerked into the air and dangled by an arm from the jaws of the beast. Searing pain threatened to swallow him into darkness.

Clenching his teeth, he struggled for his rifle, the leather strap still wrapped around his forearm. But it dangled just out of reach. He pulled it up to his chest, trying to grip it one-handed.

Just as his fingers slipped in place, the beast shook him like dog with a rag doll. His shoulder popped from its socket.

A bone snapped.

A tidal wave of blackness washed over him, drowning him.

The rifle slipped from his limp fingers.

Michaelson shoved Linda behind him. "Get back." He dodged behind yet another boulder, his rifle raised to cover their retreat. It was stalking them, backing them toward the wall. From the sound of gunfire, they were being forced in the direction of the group battling the other monster.

A clever move, he thought. It was trying to corral him back into the jaws of the other beast. "Khalid, get your butt up front here," he yelled. "I want your gun on this trail. I need to reload."

No answer.

"Khalid!"

He glanced over his shoulder.

No Khalid. No Linda. Where were they?

He turned forward to face the trail again. Two yards away, a head the size of a bull's snaked around a boulder. Small nostril flaps, spread like Chinese fans, tested the air as it hunted. It shied from his light, then stepped into view. It walked upright on two thickly muscled legs. Its mouth gaped open, almost like it was grinning. It lowered its head close to the rock floor, searching for scent. With its back bent, Michaelson noted the ridge of raised quills running down its back.

Fuckin' monster. He raised his rifle and zeroed his sights on its butt-ugly face. Smiling grimly, he pulled the trigger.

– snick-

The firing pin snapped on an empty chamber.

Ashley crawled forward. Please… still be alive.

Villanueva hung limp in the jaws of the beast. The creature jerked the SEAL's body back and forth a final time, then dropped him to the rocky floor.

Cringing, Ashley held her breath. Blood soaked his entire torso. Shit! He wasn't moving.

The beast cocked its head from side to side, studying its catch, like a bird with a worm. Focused on its prey, it was unaware of her.

Careful, she thought. Don't draw its attention. She crouched and placed each step cautiously. Her pistol was three yards away. She swallowed and took another step forward.

Almost there.

Clenching her teeth, she slipped to the gun.

The beast still toyed with Villanueva. Using a daggered claw, it flipped the SEAL's sprawled body over. She could hear it sniffing at his blood.

Ashley reached for her pistol. As her fingers wrapped around the gun, she froze.

Voices rose behind her.

"It's just over here." She recognized Khalid's thick accent.

"Are you sure?" Linda's strained voice.

The beast whipped its head around, right toward Ashley. She froze, afraid to move, praying the creature's vision was poor.

"We'll be safe in the wormhole. Too narrow for them to get to us." The voices were approaching her location. "We'll make a dash for it."

The beast's neck strained forward, head cocked. Still as stone, it listened to the voices and sounds of movement approaching. Perhaps…

She raised her gun, moving with agonizing slowness. No sudden motions to distract it.

Focusing down the barrel, she tried to target its obsidian eye, but a huge bridge of bone protected it. She didn't have a shot, unless it tilted its head just slightly.

From behind her, Linda cried, "It's Ashley!"

Shut up, she silently willed the woman. Linda obviously hadn't rounded the boulder far enough to see what else was out here.

Ashley heard Linda's boot heel scrape loose shale. "Khalid, Ashley must have had the same idea as-Oh! God!"

The beast twitched its head in Linda's direction, an eye rolling into view. Ignoring Linda's scream, Ashley pulled the trigger twice in rapid succession, the recoil dumping her backward.

Unsure if she had hit her mark, she struggled back up into a crouched position, expecting to see a maw of teeth snapping down on her.

She cringed as the beast's head, which had been thrown back by the impact of the bullets, swung once again in her direction, one eye now a cratered ruin.

It took a step toward her, hissing a piercing note. Ashley scrambled backward, tumbling into Linda.

"Get back!" Ashley screamed, fumbling to raise her gun again. Before she could take aim, it lunged at her. Ashley dodged to the side.

Linda, however, didn't.

It snagged the biologist's backpack as she twisted to flee. It dragged her past Ashley, a scream frozen on her features.

Ashley pointed her pistol, but Linda's flailing body blocked her shot.

Khalid ran forward. "Do something!"

She pressed the gun forward with both fists. No clean shot. Linda's eyes met hers, pleading and terrified. Still no shot.

A loud explosion rent the air. Everyone froze. Then, like a marionette with its strings cut, the beast crashed to the floor. Ashley, trembling now, continued to point the gun at the monster. It lay still.

Beyond the bulk of the beast, she saw Villanueva, bloody as hell, sitting up with his rifle propped in his good arm. Smoke trailed from its muzzle. He fell backward with a moan.

She rushed to where the SEAL lay sprawled. He struggled to push himself up, but Ashley held him down.

"Don't move," she said, wincing. It was difficult to look at him. A fragment of bone poked from his upper arm. Blood flowed thickly from ragged wounds.

"He saved my life," Linda whispered, coming up behind Ashley to kneel beside him, taking his scraped hand in hers.

He tried to grin. Twin trails of blood seeped out of his broken nose. "I feel like I got hit head-on by a locomotive." His eyes were glassy with pending shock. He coughed thickly.

"Don't try to talk," Ashley said, then turned to Khalid. "Go get the packs. I need the medical kit."

Khalid, who still stood a few feet away, glanced at the wormhole opening, then back at her. "We don't have time…"

Linda stood up. "We can't leave him here, Khalid. If you won't get the packs, I will." She stepped away.

Scowling, he followed.

Ashley turned her attention back to Villanueva, as another volley of rifle fire erupted from across the cavern. The SEAL's eyes closed. "Others are coming," he mumbled. "Khalid's right. You need to get out of here. Just leave my rifle."

"Shut up. We're all getting out of this fucking cavern. Every one of us." She turned back to search the darkened cave.

Did you hear that, Ben? she thought. That means you too.

Michaelson yanked the trigger again. Another empty chamber. No time to slap in another magazine.

With an angry hiss, the creature lunged at him.

Using his rifle like a baseball bat, he slammed the wooden butt into the soft sinus tissue as the snout snapped at him. The creature grunted, taking a step back. It pawed at its nose with a tiny forearm.

Not waiting, Michaelson bolted away, thanking the gods for his years of Little League back in Nebraska.

While sprinting down the trail, Michaelson pawed for the extra magazine in his breast pocket. Distracted, his foot slipped in a hole. He stumbled but managed to stay upright, but his ankle shot a bolt of pain up his leg. He hopped a few steps. Twisted or broken, he couldn't tell.

He hobbled farther. After several painful yards, he realized he would lose this race. He stopped and glanced back. All clear still. He'd have to make a stand. As he kept his eyes fixed on the trail, he struggled to force the rifle's magazine into place but had it upside down. Damn it all.