Zero Day (John Puller, #1)(125)

“How about if I just start whacking stuff?”

“Odds are real good you’re dead and a mushroom cloud probably goes up over West Virginia.”

“I should have let the cavalry come in here, chopper this thing out, and drop it in the ocean.”

“They couldn’t have done that in an hour. And hindsight is twenty-twenty.”

“Maybe they could have gotten in here before it engaged. Stopped the timer from commencing or dropped it in some deep hole.”

“Again, hindsight.”

“If this thing goes off it’s my fault, Bobby.”

“Two points, John. If that thing goes off, you won’t be around to care. Second point, the person or persons who built that thing are the responsible parties, not you! Now how much time left?”

“Fifty-seven and a half till doomsday.”

Puller looked up at Cole and pointed to the way they’d come in. He mouthed two words: Go. Now.

She shook her head and gave him a stubborn expression when he pointed to the way out again. When he did it a third time she flipped him off.

“John, you there? What’s going on?” asked his brother.

“Nothing. Just a tactical issue that has been resolved. Now when you say fizzle, what exactly are we talking about?”

“Maybe half a kiloton yield, but that’s just an educated guess on my part. The concrete dome should help contain most of the blast.”

“Half a kiloton?” said Puller. “That’s equal to five hundred tons of TNT. You call that a fizzle?”

“Hiroshima got hit with a thirteen-kiloton yield and they only used sixty kilograms of uranium and of that only six hundred milligrams actually reacted; that’s about the weight of a dime. I have no idea how much plutonium they’ve got in this sucker, but we have to plan for the worst-case scenario. There’s no way it’s as small a yield as with Hiroshima. We’re talking gun versus implosion method, uranium versus plutonium. To be safe let’s assume it’s millions of tons of TNT equivalent. That’ll send that concrete dome into orbit and spread radiation over six states or more. And you can pretty much kiss West Virginia goodbye.”

Fresh sweat sprouted on Puller’s face. “Okay, half a kiloton doesn’t sound so bad now. So tell me how to make a fizzle.”

“We have to make a premature detonation happen.”

“Yeah, that I get. How?”

“Did you bring the stuff I told you to?”

Cole looked at Puller as she dug in his knapsack and pulled out one stick of dynamite, wire, blasting cap, and a timer. She had gotten these for him. She handed them to him while he cradled the phone against his shoulder.

“I thought I was going to use this to blow a hole in something. But if you’d told me then that I’d have to use this to detonate the nuke I might not be here.”

“Yes you would,” said Robert. “I know my brother.” This was said in a joking manner, but Puller knew the man wasn’t smiling. He was in fact probably trying hard to keep his little brother calm. Trying, if it was possible, to take his mind off the fact that he might be sitting on the equivalent of millions of tons of TNT with a radiation kicker.

“Where do I put it?”

“If you’re looking at the bomb head-on, place the stick five degrees to the left.”

“Why five degrees?”

“I like the number five, John, always have.”

Puller placed the stick in that spot and confirmed that with his brother.

Robert said, “Good. Now you obviously have to set the timer for the stick to go off before the bomb timer. With a nuclear weapon even a millisecond difference in the timing of the explosions is sufficient. Stick detonates, punches a hole in the lenses, causing a series of staggered explosions. The sequential detonations will destroy the sphere along with the compression phase. The pit will squeeze through the created holes and critical and supercritical stages will never be reached. With no pit the plutonium can’t be compressed and the entire thing collapses.”

“And that’s real good?” asked Puller.

“Let me give you the three scenarios as I see them. If we’re real lucky we go low-end. That means you just have a dirty bomb with nothing nuclear in the detonation. The most we have is a small boom with some radiation exposure, which three feet of concrete should be able to contain. That would be as good as it gets. The second or medium outcome is the half-kiloton fizzle. It obviously helps that you’re in the middle of nowhere covered by three feet of concrete. Collateral damage should be manageable.”

“This county is full of a lot of people, actually,” said Puller, as Cole stared at him from behind the light she held. “And they’re basically having a real shitty life right now. So the last thing they need is a mushroom cloud popping into their misery.”

“I’m sorry, John, I didn’t know.”

“No reason you should.” Puller drew a long breath. “And the third scenario?”

“My plan works, but it doesn’t work that well, and we still go nuclear.”

“And that means?”

Robert didn’t say anything for a few moments. “I’ve never lied to you, John, and I won’t start tonight. That means that a large chunk of where you are will be completely vaporized. Like a hundred hurricanes hitting all at once. There won’t be anything left for miles. That’s just how it works.”