Wu Yue adhered to one article of faith: Command of a warship was a dangerous position, so the two commanders must understand each other’s minds. This presented Wu Yue with a knotty problem. At first, he thought that Zhang Beihai was somehow on guard, which offended Wu. In the tough post of captain of a destroyer, was anyone more forthright and guileless than he was? What do I have worth guarding against?

When Zhang Beihai’s father had briefly been their superior officer, Wu Yue had spoken with him about his difficulties talking to his commissar. “Isn’t it enough for the work to be done well? Why do you need to know how he thinks?” the general had said, gently, then added, perhaps involuntarily, “Actually, I don’t know either.”

“Let’s get a closer look,” Zhang Beihai said, pointing to Tang through the sparks. Then both their phones chirped at the same time: a text message recalling them back to their car. This usually meant an emergency, since secured communications equipment was only available in the vehicle. Wu Yue opened the car door and picked up the receiver. It was a call from an advisor at battle group HQ.

“Captain Wu, Fleet Command have issued you and Commissar Zhang emergency orders. The two of you are to report to General Staff immediately.”

“General Staff? What about the fifth fleet training exercise? Half the battle group is at sea, and the rest of the ships will join them tomorrow.”

“I’m not aware of that. The order is simple. Just that one command. You can look at the specifics when you get back.”

The captain and commissar of the still-unlaunched Tang glanced at each other, then had one of the rare moments throughout the years where their thoughts aligned: Looks like that patch of water will remain empty.

* * *

Fort Greely, Alaska. Several fallow deer ambling along the snowy plain grew alert, sensing vibrations in the earth beneath the snow. Ahead of them, a white hemisphere opened. It had been placed there long ago, a giant egg half-buried beneath the ground, but the deer always felt it didn’t belong to this frozen world. The egg split open and issued forth thick smoke and flames, then, with a roar, it hatched a cylinder that accelerated upward, spurting flames from its bottom. The surrounding snowdrifts were thrown by the fire into the air, where they fell again as rain. When the cylinder gained enough height, the explosions that had terrified the deer were again replaced by peace. The cylinder vanished into the sky trailing a long white tail behind it, as if the snowscape was a giant ball of yarn from which a giant invisible hand had pulled a strand skyward.

“Damn it! Just a few more seconds and I’d have confirmed a launch interrupt!” said Target Screening Officer Raeder as he tossed aside his mouse. Raeder was thousands of kilometers away in the Nuclear Missile Defense Control Room at the NORAD Command Center, three hundred meters beneath Cheyenne Mountain near Colorado Springs.