“Everyone aboard Alexandria will be anxious to hear what happened. Had us plenty worried when we found the sub downstairs without you in it. Guess you’ll have plenty of time in the chamber to fill us in.”

He had to sit down and goose the motor to keep the Zodiac from swamping under a wave. As Dahlgren pivoted back to the ATV so Dirk could jump aboard, he noticed the shredded jumpsuit and multiple bruises. “If you don’t mind me saying, you look like you went square dancing with a rototiller.”

“If it’s any consolation, I feel like it,” Dirk said.

“You don’t want to park that ATV on dry land?”

“No, the owner was rather troublesome about me borrowing it. I suggest we get to the Alexandria as soon as possible.”

Dahlgren gunned the outboard motor and steered toward the research ship. Dirk gazed across the horizon, spotting the patrol boat speeding in their direction. A moment later, a deep rumble drowned out the whine of the outboard, and a shadow darted over the Zodiac. Dirk looked up to see a low-flying C-130 lumber over. It was painted gray, with the multicolored flag of South Africa displayed on its tail. Dahlgren waved at the plane, slowing the Zodiac to be heard over its motor.

“Search-and-rescue plane we dialed up out of Pretoria. About time they showed up. I guess we better let them know you’re safe.” He retrieved a handheld radio and informed the Alexandria of Dirk and Summer’s appearance.

While they waited for the message to be relayed to the airplane, Dirk tapped Dahlgren’s shoulder and pointed to the approaching patrol boat. “Call back and ask the plane if they would buzz those guys. Tell them we suspect they’re part of a local piracy ring.”

“I reckon the FAA doesn’t extend to these waters,” Dahlgren said, and relayed the message.

The C-130 had already receded to a speck on the horizon. Then it turned and grew larger. The pilot brought it down low, barely fifty feet above the waves. Approaching the patrol craft off its stern, it caught the crew by surprise. Several gunmen threw themselves to the deck as the roar of the four 4,200-horsepower turboprop motors engulfed the patrol boat.

The plane flew past, made a lazy turn, and came back for a second run across the patrol boat’s beam. This time, a few of the braver crewmen waved their weapons, but nobody fired a round. Undaunted, the C-130’s pilot made three more passes, each one lower than the last. The patrol boat accepted the message, reluctantly veering off and motoring back to shore. Tracking it for good measure, the C-130 hung around at low altitude for almost an hour, before dipping its wings and heading home.

Dirk looked to Dahlgren. “Remind me to send a case of beer to the South African Air Force.”

“Those boys don’t mess around, do they?”