Manny answered this question. "They can't figure out what we are, if we're edible:"

The Asian Ranger looked sick. "Let's hope they don't find out."

The waiting stretched. The air seemed to grow thicker around them.

"What if we shot a grenade far from here?" Camera offered. "As a distraction, something to draw them off."

"I'm not sure it would help. It might just rile them up, get them snapping at anything that moves, like us:"

Zane spoke from the farthest raft, but his words easily reached Nate's boat. "I say we strap some explosives to that jaguar and push it overboard. When one of the crocodiles goes for the cat, we trigger the bomb:"

Nate shuddered at this idea. Manny looked sick. But other eyes were glancing their way with contemplative expressions.

"Even if you succeeded in doing that, you'd only kill one of them," Nate said. "The other, clearly its mate, would go into a rampage and attack the rafts. Our best bet is to hope the pair lose interest in us and drift away, then we can paddle out of here:"

Waxman turned to Corporal Yamir, the demolition expert. "In case the crocodiles don't get bored, let's be prepared to entertain them. Prime up a pair of the napalm bombs:'

The corporal nodded and turned to his pack.

Once again, the waiting game began. Time stretched.

Nate felt the raft tremble under his knees as one of the pair rubbed the underside of the logs with its thick tail. "Hang on!"

Suddenly the raft bucked under them. The stern was tossed high in the air. The group clung like spiders to the bamboo. Loose packs rolled into the lake with distinct splashes. The raft crashed back to the water, jarring them all.

"Is everyone okay?" Nate yelled.

Murmurs of assent rose.

"I lost my rifle," Okamoto said, his eyes angry.

"Better your gun than you," Kouwe said dolefully.

Nate raised his voice. "They're getting bolder!"

Okamoto reached out to one of their floating packs. "My gear."

Nate saw what he was doing. "Corporal! Stop!"

Okamoto immediately froze. "Shit . . :' He already had the strap of his rucksack in hand, half pulled out of the water.

"Leave it," Nate said. "Get away from the edge:'

The corporal released his pack with a slight splash and yanked his arm back.

But he moved too slowly.

The monster lunged up out of the depths, jaws open, water sluicing from its scales. It shot ten feet out of the swamp, a tower of armor plating and teeth as long as a man's forearm. The Ranger was pulled off his feet and shoved high into the air, screaming in shock and terror. The huge jaws clamped shut with an audible crunch of bones. Okamoto's scream changed in pitch to pain and disbelief. His body was shaken like a rag doll, legs flailing. Then the creature's bulk dropped back into the depths.

"Fire!" Waxman called.

Nate had been too stunned to move. Camera blazed with her M-16. Bullets peppered the underside of the giant, prehistoric caiman, but its yellowed belly scales were as hard as Kevlar. Even at almost point-blank range, it looked like little harm was done. Its weak points, the eyes, were hidden on the far side of its bulk.

Nate swung up his own shotgun, stretched his arm over Manny's head, and fired. A load of pellet sprayed through the empty air as the beast dropped out of range. A wasted, panicked shot.

The caiman was gone. Okamoto was gone.

Everyone was frozen in shock.

Nate's raft bobbed in the wake of the creature's passing. He stared out at the spot where the Ranger had vanished, Okamoto with his damn whistling. A red stain bubbled up from below.

Blood on the water . . . now the monsters know there's food here.

Kelly crouched with her brother in the center of their raft. Captain Waxman and Corporal Warczak knelt with their weapons ready. Yamir was finalizing his prep on two black bombs, each the size of a flat dinner plate with an electronic timer/receiver atop it. The demolitions expert leaned back. "Done," he said with a nod to his captain.

"Retrieve your weapon," Waxman said. "Be ready."

Yamir picked up his M-16 rifle and took up watch on his side of the raft.

A splintering crash sounded behind them. Kelly swung around in time to see the third raft in their flotilla knocked high into the air, the same as Nate's raft had done a moment before. But this time, its occupants were not as lucky. Anna Fong, her grip broken, went flying, catapulted through the air by the sudden attack. The anthropologist struck the water at the same time the raft crashed back down. Zane and Olin had managed to cling to the raft, as had Sergeant Kostos and Corporal Graves.

Anna popped to the surface, coughing and choking on water. She was only yards from the raft.

"Don't move, Anna!" Nate called. "Tuck your arms and legs together and float:"

She clearly tried to obey, but her pack, waterlogged, dragged her underwater unless she kicked to keep herself afloat. Her eyes were white with panic; both the fear of drowning and the fear of what lurked in the waters shone bright in her eyes.

Movement drew her attention back to the assaulted raft. Sergeant Kostos was leaning out with one of the long bamboo poles that they had used to propel themselves away from shore.

"Grab on!" Kostos called to her.

Anna reached to the bamboo, fingers scrabbling for a moment, then clinging.

"I'm gonna pull you toward the raft:"

"No!" she moaned.

Nate again called. "Anna, it should be okay as long as you don't make any sudden moves. Kostos, pull her very slowly toward you. Try not to raise a ripple:"

Kelly trembled. Frank put his arm around her.

Ever so slowly, the sergeant drew Anna back to the raft.

"Good, good..." Nate mumbled in a tense mantra.

Then, behind Anna, an armored snout appeared, just the nose, its eyes hidden underwater still.

"No one shoot!" Nate called. "Don't rile it!"

Guns pointed, but there was no kill shot anyway.

Kostos had stopped pulling on the bamboo with the appearance of the caiman. No one moved.

A moan flowed from the woman in the water.

Ever so slowly the snout inched forward, rising slightly as its massive jaws yawned open.

Kostos was forced to slowly draw Anna toward him, keeping her just a couple of feet ahead of the approaching monster.

"Careful!" Nate called.

It was like some macabre slow-motion chase . . . and they were losing.

The snout of the creature was now less than a foot from the woman, the jaws gaping open behind her head. There was no way Anna could be pulled aboard without the creature attacking.

Someone else came to this same realization.

Corporal Graves ran across their raft and leaped over Anna's head like an Olympic long jumper.

"Graves!" Kostos yelled.

The corporal landed atop the creature's open snout, driving its jaws closed and shoving it underwater.

"Pull her aboard!" Graves hollered as he was sucked under by the caiman.

Kostos yanked Anna back to the raft and Olin helped haul her on board.

A moment later, the beast reared up out of the water, Graves still clinging to the top of its wide head. The caiman thrashed, trying to dislodge its strange rider. Its jaws reared open, and a bellow of rage escaped from it.

"Fuck you!" Graves said. "This is for my brother!" Clinging fast with his legs, he yanked something from his field jacket and tossed it down the beast's gullet.

A grenade.

The massive jaws snapped at the Ranger, but he was out of reach.