Cade has been nervous about this all day, and it's been obvious during his drills: he's distracted, worried, and can't get his head out of the clouds.
When the fateful moment finally arrives, he comes over to the pair, very mindfully not slinking, since he knows they hate that. So he stands straight, and though he still can't bring himself to make eye contact, he does take Nate's hand to shake it.

"Warden Howe," he timidly replies.