It had been a long... several days of time with only a tiny cat nap's worth of sleep followed by a damned Klingon attack. It took him a minute to grasp at Spock's words. "Another person? Who the hell are you talking ab--"

It came to him then, after he had already opened his mouth of course. He frowned at Spock, brows drawing together. "I'll assume you're talking about your older counterpart? If you haven't noticed, ship or no, he's already someone's first officer. Besides, he isn't the person I chose for my ship." Definitely anger worming into his voice.