"Yeah." McCoy chooses his words carefully. He still barely knows Hunter, and since the truth would be awfully difficult to explain without revealing classified information, he can't afford to drop any hints. Fortunately, half-truths make it a bit easier. "He's damn lucky to be alive. If we hadn't had access to an old cryo tube, he never would've made it long enough to treat the radiation poisoning. As it is, he's got a long recovery ahead of him."

Assuming that Jim wakes up, that is. McCoy doesn't want to jinx anything, so he hasn't voiced this particular worry aloud, not even to Spock. It hasn't been long enough to make any assumptions like that. But he still worries.