[When they finally get a glimpse of the thing that has been tracking Victor, it's scrambling toward them with a shriek; Bucky pulls the trigger and it goes down heavily into the muck with a fresh bullet hole in its skull. He's not going to feel bad about that. He straightens and shoulders his rifle again, nodding down a branching-off tunnel.] If this sector isn't clear, you should get back up to your rendezvous point.

[He does take in, though, that Yuri's name rings a bell for this guy. Someone his wayward trainee knows? From home, he guesses. He wonders if that'll help with the kid's homesickness or not.] Friend of his? Yuri's been here a few weeks, same as me. [Bucky catches that flicker of distress, and sighs briefly.]

He wanted to learn to defend himself. He's doing well, but he was supposed to stay with his squad. Don't worry, I'll find him.