Austin asked Hibbet what he made of the images. The NUMA scientist stared at the screen with a furrowed brow, and asked for a second run-through of the photos.

“It's fairly obvious that a great deal of electrical power is being fed into a central point.” He pointed to the cone-shaped framework. “It's hard to know what this apparatus is for in its present state.”

“Joe described it as a giant spark plug,” Austin said.

Hibbet scratched his head. “Probably not. More like a giant Tesla coil. Many of the circuits that make this thing tick are not visible. Where is the ship now?”

“It sank to the bottom of the sea again,” Zavala said.

Hibbet's reaction wasn't what Austin expected. There was excitement in his gray eyes as he rubbed his palms together. “This beats fiddling around with antennae any day.” He clicked through the computer pictures again, then he glanced around the table. “Anyone here familiar with the work of Nikola Tesla?”

“I'm the only one who reads Popular Science on a regular basis,” Zavala said. “Tesla invented alternating current.”

Tibbet nodded. “He was a Serbian American electrical engineer. He discovered that you could rotate a magnetic field if you took two coils at right angles and juiced them with AC current out of phase.”

“I wonder if you might put that in English,” Adler said politely.

Hibbet laughed. “I'll put it in a historic context. Tesla moved to the United States and worked for Thomas Edison. They became rivals. Edison advocated direct current, and there was a fierce battle. Tesla got the edge when he was commissioned to design the AC generators at Niagara Falls. He sold the patents to his induction motor to George Westinghouse, whose power system was the basis for what we use today. Edison had to be content with the electric lightbulb and the phonograph.”

“Tesla filed a bunch of wild patents, as I recall,” Zavala said.

“That's right. He was an eccentric genius. He filed a patent for an unmanned electrically propelled aircraft that could fly at eighteen thousand miles per hour and could be used as a weapon. He came up with something called 'teleforce,' which was a death ray that could melt airplane engines at a distance of two hundred and fifty miles. He did a lot of work on wireless transmission of electricity. He was fascinated by the possibility of focusing electrical force and amplifying its effect. He even claimed to have once produced an earthquake from his lab.”

“Tesla may have simply been ahead of his time, with ballistics missiles and lasers,” Austin said.

“His concepts were sound. But the execution never lived up to the expectations. He's become something of a cult figure in recent years. The conspiracy-minded suspect that various governments, including our own, have been experimenting with the more destructive aspects of Tesla's work.”

“What do you think?” Austin said.