He examined the connection for damage, found nothing serious and quickly reconnected the cable. Austin yelled at Barrett to power up. The humming of the bees began, and rose to a pitch where it drowned out the roar of the jet engines. Karla had joined Barrett at the control panel. Austin stood near the intercom where he could keep in close touch with the cockpit.

“How does it look?” Austin asked.

Barrett's eyes swept over the control panel and he smiled. “Everything is on track.”

Austin gave him the thumbs-up, and called to Zavala, “What's our altitude?”

“Eight thousand feet.”

“Good. Bring her down to four thousand, and then make a level pass directly over the ship. Let me know when we're starting the approach to the target.”

“Aye, aye, sir.”

As the plane dropped lower, the pilot had to contend with an unexpected burst of turbulence. He got the plane back on an even keel with some skillful flying. Zavala called to say that they were making their approach to the ship.

Austin called out to Barrett to give it the juice. He hesitated with his hand over the power switch, and for a second Austin thought he hadn't understood. Then Barrett stepped aside and put Karla's hand on the switch.

“This is in honor of your grandfather.”

Karla replied with a broad grin and threw the switch. Power flowed into the antenna, where it was converted to pulses of electromagnetic energy. Austin had no precedent or experience to work with, so he was laying down a pattern of energy bursts in much the same way a sub hunter saturates the ocean with depth charges.

They were over the ship an instant later. Austin ordered the pilot to repeat the procedure, coming in at another angle. The 747 wasn't built for strafing runs, and the big plane seemed to take forever as it banked around in a wide turn and started back to lay down another series of charges.

Again Zavala yelled out the five-hundred-yard mark. Again Karla laid on the power.

Another pass, another barrage of electromagnetic pulses flowed into the sea around the ship.

“How long do we need to do this?” Zavala said.

“Until we run out of fuel, and then some,” Austin said with a steely determination in his voice.

THE MOOD was euphoric on the observation platform of the Polar Explorer.

Margrave and Gant gazed up through the glass-paneled ceiling, their faces bathed in the pulsating, multicolored light emanating from the aurora high above the ship. Margrave's strange face never looked more satanic.

“Spectacular!” Gant said in a rare show of emotion.

Margrave stood behind the control consol. He had been gradually accelerating the dynamos to full power, and the console was lit up like a pinball machine.

“The aurora indicates we've reached critical mass,” he said. “The electromagnetic waves have penetrated the ocean floor. They'll change the electromagnetic flux and nudge the pole over. Keep an eye on the compass for the big flip.”