Michael Grant said this quote

Endgame,” Sam muttered, not really expecting Caine to hear.“Yep,” Caine said. “That’s right. Endgame. The FAYZ barrier is coming down; at least that’s mybet. But there’s also a ninety percent chance you and me both end up dead. Ten percent chance weboth actually get out of here alive. In which case we end up sharing a cell somewhere.” He laughed.“Kind of unfair, really, what with me being evil and all, and you just so darned virtuous and heroic.