Devil's Gate (NUMA Files 9)

“And aircraft?” Gamay asked.

“They face the same kind of danger,” the captain said. “Flying on the deck still comes with some vertical component. And pilots who encounter problems are taught to pitch up immediately because that’s better than flying into the deck or the ocean. But out here, that would immediately expose them to direct fire. And for aircraft flying at altitude, like civilian airliners, the danger zone might extend three hundred miles or more.”

Gamay took a deep breath and looked over at Paul.

“Truth is,” the captain continued, “it’s something we’ve never dealt with before.”

“What are your options,” Paul asked.

“Normal procedure calls for airstrikes,” the captain said. “Beginning with cruise missiles. But both Tomahawks and Harpoons fly at subsonic speeds. F-18s max out around Mach 2, and not that fast down on the deck.”

He turned back to the screen and its red “Event Horizon” line.

“An accelerator like this one fires a particle stream that moves at almost the speed of light. That means our fastest missile will cover no more than one or two feet in the time it takes that beam to cover fifty miles.”

An image flashed into Gamay’s mind. She pictured soldiers in World War I going over trench walls in futile charges against enemies armed with machine guns. She was no war historian, but she understood why the carnage was so high and the battle lines never moved. Most of the men in those charges were cut down before they’d made it ten yards. This sounded like a similar situation.

“So if supersonic aircraft and missiles are too slow to attack this thing, how are you proposing to do it?” she asked.

The captain pointed to the circular ring.

“They obviously chose to build this system beneath the surface in order to keep anyone from spotting it. That’s left them with one vulnerability: they can be attacked beneath the surface, where the water density prevents a particle beam from being an effective weapon.”

“Do you have submarines standing by?” Paul asked.

The captain nodded.

“Every carrier battle group brings along a couple of unseen friends. We have two Los Angeles — class attack subs. The Memphis and the Providence. Our intention is to send them on the offensive.

“We’ve had the Memphis creep up to a position fifteen miles from the target zone. Their sonar is picking up a whole bundle of signals matching the signature your team recorded.”

“A whole bunch?” Gamay said.

The captain nodded. “They have at least a dozen of these small submarines patrolling the mouth of this zone. If they’re all armed, even with a couple of torpedoes each, that’s a big issue.”

“Surely two Los Angeles — class subs can deal with them,” Paul said.

“We can get in there and mix it up,” the captain said, “but our subs are designed to hunt large Russian and Chinese subs in the deep dark parts of the sea. This weapon is situated on a shallow stretch of the continental shelf. The depth at the Quadrangle site averages no more than sixty feet. At two miles, it drops a little, and you even get this tiny cut of a canyon here…”

He pointed to a thin line that widened and deepened into a gash in the ocean floor as it moved away from the target zone.

“… But aside from that ravine, the depth never exceeds two hundred feet until you’ve passed beyond ten miles. That limits the maneuverability of our boats, and it gives them the advantage.”

The captain stood back and took a breath, pulled his hat off, smoothed his short hair, and tucked the hat snugly back on his head.

“Part of a commander’s job is not to commit his units to indefensible ground or to send them into battle on missions they are not suited for. The other part is to know when he has to violate that principle. If these guys have some way — any way — to threaten the U.S. mainland, then we have no choice but to take the risk here.”

“I get the sense you’re telling us this for a reason,” Gamay said.

The captain nodded. “We may need your help.”

Her eyes grew wide. “Our help?”

Paul seemed just as surprised. “What can we do that the U.S. Navy can’t?” he asked.

“With your small submersible, you can get deep into that canyon — it runs to four thousand feet — and you can sneak up on them from the blind side.”

Gamay had to fight not to lose it. Her head swam dizzily. Her stomach felt sick.