Mercado relaxed a little when it looked like Kirk wouldn't go after Harris. Harris was a good man and didn't need his Captain taking his head off. Just young.

"Then maybe you should tell me, when you hear about those breaches sir. Rather than expecting me to psychically know when my crew is screwing up. I'm only human, not Betazoid or Vulcan." He inclined his head respectfully towards the First Officer. "Sir. We would walk through fire for you. We were incredibly disappointed when we didn't get to do our job and come along to help get you back. But if we don't get feedback, we can't know what we're doing wrong."