“And yet you’re keeping it a secret,” she said. “Like most men I’ve known, you want proof before you speak, or at least a reasonable amount of corroborating evidence.”

She waved her hand over the setup. “This looks like an attempt to get that to me.”

“You really have a marvelous sense of intuition, Mrs. Trout. I bet Paul can’t get away with anything.”

“He’s learned not to try.”

“A wise man,” Marchetti said, offering a sheepish grin. “You’re right of course. I have a hunch that the microbots are indeed responsible for the temperature anomaly. I remember hearing of a plan to stop global warming. It involved years of continuous rocket launches and the dispersal of millions upon millions of reflective discs in orbit around the planet or perhaps only over the poles, I really can’t recall for certain. These reflective discs would block a portion of the sunlight, reflecting it back into space. A small percentage. Just enough to counteract the effect we’ve begun feeling.”

She remembered hearing something about it.

“Obviously there were huge problems with the idea,” Marchetti continued, “but the concept intrigued me. I’ve often wondered if it would really work.”

“There are precedents,” Gamay said. “After large volcanic eruptions, the ash in the air spreads around the globe, doing much the same thing as these discs you’re talking about. Famines in the sixth century have been blamed on ash dimming the sun’s output and causing crop yields to fall. Eighteen fifteen has been called the year without a summer because the average temperatures around the globe were surprisingly low. The eruption of Mount Tambora in Indonesia is the prime suspect.”

“I feel a similar principle may be at work here,” Marchetti said. “Not in the atmosphere but in the sea.”

He pointed to the experiment. “I’ve attempted to re-create a solar warming-and-cooling cycle in this water sample. But there’s a problem with my theory. Even with the murky layer of bots at the top, it behaves almost like regular salt water.”

“Meaning?”

“The microbots absorb some of the heat, but nowhere close to what would be required to cool the water in the manner we’ve seen.”

“How large is the difference?”

“Very substantial,” he said. “Close to ninety percent deviation. And that’s a lot in anyone’s book.”

“You mean in your experiment you found—”

“Only ten percent of the cooling we’ve recorded out there in the open ocean. Yes, that’s exactly what I mean.”

She looked around. She didn’t have to ask if he’d done the experiment right or if he wanted to try it again. He’d been secluded up here for hours, and he’d been an engineer before becoming a computer programmer. She guessed he knew what he was doing. Besides, she saw six other setups that looked identical to the one in front of them. She assumed they were controls.

“So what does that mean?” she asked. “And this time pretend you’re a woman and share.”

“There are two possibilities,” he said. “Either something else is responsible for the majority of the cooling or the microbots are cooling the ocean through some other process or mechanism that we’ve yet to observe or discover.”

“All the more reason to keep sailing toward them,” she said.

“I’m afraid so,” he replied.

Before Gamay could say anything more, an alarm began to sound throughout the lab. It was sharp, piercing, and accompanied by flashing strobes.

“What’s happening?”

“Fire alarm,” Marchetti said. He reached for an intercom switch and pressed it. “What’s happening, chief?”

“We have multiple heat signals,” the chief replied, sounding as if he was still checking. “We have confirmation,” he added. “There’s a fire in the engine room.”

CHAPTER 27

PAUL TROUT HEARD THE ALARMS AND RACED DOWN THE hall until he reached the makeshift lab. Marchetti was on the intercom in a rapid-fire discussion with his chief of engineering. Gamay stood next to him with a concerned look on her face.

“Fire,” she said.

“I figured that,” Paul replied.

He began to smell smoke and the distinctive odor of diesel fuel burning. “Engine room?”

She nodded.

Marchetti asked into the microphone. “Can you get the robots back online?”

“They’re not responding.”

“What about the fire-suppression system?”

“Also not responding.”

Marchetti looked ill. “Keep working on it,” he said, pressing the intercom button again. “We’ll have to fight it by hand. Have Kostis and Cristatos meet me there. Have the others stand by.”

Marchetti looked over to Paul and Gamay. “Either of you have firefighting experience?”

“I do,” Paul said. “I’ll go with you.”

Now Gamay looked ill. “Paul, please,” she said.

“I’ll be okay,” he replied. “I’ve had plenty of training. Get yourself to somewhere safe.”

“The control room,” Marchetti said. “My chief is there.”

Gamay nodded. “Be careful.”

Paul raced out the door with Marchetti and they took a stairwell down toward the main deck. From there a second stairwell took them into the hull and then along a hall that led to the engine room. The smoke thickened as they neared the aft end of the island.

“This is the fire station,” Marchetti said, reaching a storage area with several tall doors.

They were fifty feet from the engine room. The smell of fuel was sickening, and the heat of the fire could be felt and heard.

Marchetti opened the panel marked fire. Inside on pegs were bright yellow firefighting suits made of Nomex and accented with reflective stripes of orange. On a shelf above each suit, the familiar air tanks and masks rested. Each SCBA, or Self-Contained Breathing Apparatus, included a fire- and heat-resistant mask with an integrated regulator, a communications system and a heads-up display. A harness supported flashlights and other tools, along with low-pressure air cylinders that would mount on men’s backs.

Marchetti grabbed a fire suit, Paul did also. As they pulled them on, Kostis and Cristatos arrived and did the same.

Pulling his mask into place, Paul opened the regulator valve. He gave a thumbs-up. The air was good.

Marchetti reached over and flicked a switch on the side of Paul’s mask. Paul heard static for a second and then the sound of Marchetti’s voice came through headphones.

“Can you hear me?”

“Loud and clear,” Paul said.

“Good. The respirators are equipped with radios.”

Paul was ready. The two crewmen were almost ready. Marchetti moved to the stanchion on the wall and began unfurling the hose.

Paul slotted in behind him, and they began to move forward.

As they approached the open bulkhead door to the engine room, Paul asked, “What’s the plan?”

“While the chief tries to get the robots back online, we do the best we can to fight the fire.”

“Why not just seal it off?”

“One of my men is in there,” Marchetti said.

Paul took a look at the burning engine room. He could barely imagine anyone surviving what was fast becoming a conflagration, but if there was a chance, they had to search.

“Is there anywhere he could shelter?”

“There’s a small office near the back of the engine room, a control room. If he was in there when it started, he might be alive.”

Two lines were now laid out. The hose Paul and Marchetti held and a second one for Kostis and Cristatos.

“Open the tap,” Marchetti shouted.

One of the crewman turned the valve, and the hoses came to life as they swelled with water. Marchetti opened the nozzle, and the high-pressure stream burst forth like a jet. Even with Marchetti also holding tight, Paul felt himself fighting the recoil.

He tightened his grip and flexed his knees, pushing forward as he and Marchetti forced their way into the engine room.

Passing the bulkhead felt like crossing the threshold into hell. Black smoke swirled around him so dark and thick that at times all he could see of Marchetti was the beacon on his respirator. Waves of heat baked him through the Nomex suit, and his eyes stung from smoke seeping beneath the seal of the mask. Here and there orange flames cut through the dark. They raced up and down and around, occasionally shooting over the top of the men like demons dancing to perdition. A series of small explosions shook the room from its farthest recesses.