The deck beneath his feet took a sudden lurch, and he felt the ship twist slightly from the uneven pull of the rapidly flooding holds. Releasing his mangled and frozen fingers from the links, he looked at the chain and tried another tack. Leaning over the landing in order to attack from a right angle, he began kicking at the knot with his boots. Inside the storage compartment, he could hear panicked shouts from several voices urging him to hurry. From the water nearby, a few of the Narwhal’s crew yelled over, echoing the sentiment. As if to add its own pressure, the barge let out a deep metallic groan from somewhere far beneath the surface.

With his heart pounding, Dahlgren kicked at the chain with his toe. Then he stomped with his heel. He kicked harder and harder, with a growing sense of anger. Furiously he kicked, as if his own life depended on it. He kept on kicking until a single link of chain finally slipped over the tightly wound coil.

It created just enough slack to allow the next link to slip through with a subsequent kick, and then one more. Dahlgren dropped to his knees, jerking the free end of the chain through the loosened knot with his numb fingers. He quickly uncoiled the chain from the stanchion, allowing the hatch lever to move free. Rising to his feet, he yanked up on the lever, then pulled the hatch open.

Dahlgren didn’t know what to expect and fumbled with his flashlight as a number of shapes moved toward the hatch. Turning the light inside, he was shocked to find forty-six gaunt, frozen men staring back at him like a savior. Bojorquez was closest to the hatch, still clutching his small hammer.

“I don’t know who you are, but I’m sure glad to see you,” the sergeant said with a toothy smile.

“Jack Dahlgren, of the NUMA research ship Narwhal. Why don’t you boys come on out of there?”

The captives rushed through the hatchway, staggering out onto the listing deck. Dahlgren was surprised to see several of the men dressed in military garb, small U.S. flags on their shoulders. Roman and Murdock were the last to exit and approached Dahlgren with a relieved look on their faces.

“I’m Murdock of the Polar Dawn. This is Captain Roman, who tried to rescue us in Kugluktuk. Is your vessel standing by?”

Dahlgren’s astonishment at the realization he had found the captured Americans was tempered by the news he had to bear.

“Our ship was rammed and sunk by your tow vessel,” he said quietly.

“Then how did you get here?” Roman asked.

Dahlgren pointed to the tender just visible a few yards off the sinking barge.

“We barely escaped ourselves. Heard your rapping on the hatch and thought it was a submersible of ours.”