Piranha

The original plan was for MacD and Mike to access the holds via the emergency vents atop the deck, injecting the bacteria-laden vapor into each tank one by one. But once they had discovered that all of the tanker’s lights were on, it was clear they would almost certainly be spotted from the bridge with that approach, and there was discussion of aborting the mission entirely. However, Linda pointed out that they wouldn’t get this opportunity again and MacD and Mike had agreed.

They brainstormed alternatives for five minutes before Linda suggested a solution that had previously been rejected in the pla

She told MacD and Mike that modern tankers used residual gas from the boiler flue to replace the air that was left in the storage tanks. The oxygen-deprived exhaust was inert, eliminating the chance that a spark could ignite the fuel vapor inside the tank.

A quick review of the Sorocaima’s schematics confirmed that the tanker was equipped with just such a system. If they could get to the purge controls inside the pump room, they could inject the Corrodium bacteria into all six holds at once.

With the deck still clear, MacD nodded to Mike and they hopped over the railing, leaving their magnets attached to the hull out of sight. The handles had enough battery power to last two hours, so it was simpler to leave them in place for a quick escape.

They pressed themselves flat against the outer wall of the superstructure next to the door leading inside. MacD felt naked in the bright light, and seeing Mike didn’t boost his confidence. Clad in black from head to toe, including a greasepaint-covered face and a black backpack containing three canisters of the Corrodium, Mike might as well have had the word “Intruder” emblazoned on his shirt. MacD was dressed identically. Their only chance at remaining undetected was to stay quiet and out of anyone’s sight.

Neither of them had to refer to a map. They had memorized the route inside the ship that would present the least chance of them being discovered. Once at the pump room, Linda would talk them through the process for injecting the canisters’ contents into the air purge system. She would be able to follow their progress via head-mounted cameras and microphones and communicate with them through their earpieces.

He nodded to Mike, who eased the door open. They didn’t have their sidearms at the ready. Gunfire would raise all kinds of alarms. If it came to a confrontation, their hand-to-hand combat skills would be more than a match for any crew member, and the crew on a tanker like this would be unlikely to carry any weapons.

MacD poked his head in and saw an empty corridor. With only twenty crew on board the Sorocaima, he hoped most of them would currently either be on the bridge or in the engine room, attending to the supposed malfunction. Of course, a crewman could pop out of a random door at any time, ruining everybody’s night. The way MacD figured it, this mission was going to be at least fifty percent luck.

He and Mike crept along the corridor, using only hand signals to communicate. The path to the pump room was straightforward: the third door on the right was a stairwell, then it was four decks down to a hall leading directly to the room.

They reached the third door. MacD heard footsteps clanking up the metal stairs. He gestured to a utility room across the hallway. With no time to check if it was clear, they ducked inside. To MacD’s relief, it turned out to be empty, and they got the door closed just as the stairwell door banged open. They listened as footfalls trudged down the hallway until the outer door slammed open and then closed. Silence descended.

“I hope we didn’t use up all our luck on that one,” Mike said.

“My daddy always said, ‘Luck never gives, it lends,’” MacD replied. “Let’s get this done before we have to pay it back.”

“Amen, brother.”

MacD pushed the door open and they stole across the hall. They didn’t run into anyone else before they reached the door of the pump room. There was too much ambient noise on the opposite side of the door to be sure that the room was empty.

He cracked the door and, from his limited viewpoint, saw no one. He was tempted to continue inside slowly, but two voices somewhere behind them speaking Spanish made time a luxury. Even if the men simply passed by, he and Mike would surely be seen.

They moved through the door and immediately realized their luck was about to run out. Linda mumbled a curse in their ears because she could see the same thing they saw.

Two crewmen were hunched over a display, both with their backs to the door. Neither of them had heard MacD and Mike enter, and Mike, realizing that the door was closing quickly enough to be heard over the background noise, jammed his hand between the door and jamb to keep it from making a sound. He grimaced in pain but stayed silent. MacD moved the door enough for Mike to pull his hand away and then eased the door latch closed with nary a scrape of metal. MacD silently thanked the crew for being diligent enough to keep all of the hinges well oiled.

The two crewmen still hadn’t noticed them, but one turn of the head and their presence would be known. They were only twenty feet from the purge valve that MacD and Mike needed to access. There was no way to reach it without being seen. Knocking them out wasn’t the answer because it would reveal that intruders were on board.

They retreated behind a vertical pipe as big around as an oak tree and kept an eye on the two men from their hidden vantage point. All they could do now was wait and hope the crewmen would go on to other tasks in another part of the ship.

Five minutes went by. Then six. Then seven. The crewmen didn’t budge.

“This isn’t working,” Linda whispered, knowing they couldn’t respond. “If we wait any longer, the ship will get under way before you can do the job. Let’s see if we can get them out of there.”

Three loud bangs reverberated through the hull. Linda had reactivated the beatbox.

The crewmen’s heads snapped up and twirled around, looking for the source of the noise. One of them raised a walkie-talkie and fired off rapid Spanish, shrugging and pointing to the display as he spoke. Whatever the problem was, it obviously wasn’t in the pumping system because they had been monitoring it when the bangs were heard.

The crewman lowered his walkie-talkie and gestured for the other man to follow him out of the room. The door slammed shut behind them, leaving MacD and Mike alone.

“How did you know that would work?” MacD asked as they dashed over to the gas purge controls.

“I didn’t,” Linda replied, “but it was the only thing we had. They’re probably certain the problem is in the engine room now.”

Mike, who couldn’t hold anything with his injured right hand, removed the canisters from his pack with his left. “What if the captain decides to turn back?”

“That’s a chance I had to take. Unless his gauges are telling him something else, we’ll hope that he’ll assume the noise is incidental and report it to the maintenance crew when he arrives at his destination.”

While Mike stood watch at the door, Linda talked MacD through the injection process. With her guidance, he attached each of the six canisters to the valve junction in sequence and in five minutes the Corrodium bacteria was multiplying inside the Sorocaima’s holds.

Like campers in a national park, they pla

Before he was finished, he felt a vibration thrum through the floor.

“Is that you?” he asked Linda.

“Negative. They’ve engaged the engine. The tanker is getting under way. Get out of there now!”

MacD, with the shortened deadline, couldn’t argue with that order. He jammed the last of the canisters into the pack and handed it to Mike, who put it on.