With those codes, they can

有了这些密码他们就能
destroy any long-range nuke that we fire.

摧毁我们发射的任何远程核武器
And that would make America vulnerable to a nuclear strike.

美国在面临核袭击时会变得不堪一击
So, change the codes.

那就改密码
We can't.

我们做不到
Cerberus was designed as a self-contained total-isolation system.

地狱犬被设计成一个完全独立自给的系统
The only way to change the codes

改变密码的唯一方式
is physically on the computer itself.

就是亲自在那台电脑上操作
which is located in the president's bunker.

电脑位于总统的地堡中
So, now we know why

现在我们知道
they wanted the president's son.

他们为什么要找总统的儿子了
The president will hold out as long as he can.

总统会宁死不屈