He can feel the sudden shift in Steve the second he hits wakefulness. Tension shifts in his shoulder from fight to fright for a second, before it ultimately bleeds out when he recognizes his surroundings. He allows his hand to fall away to make room for Steve as he rises. Barnes shifts back on his haunches, bare feet flat on tile, and he purses his lips into something that's almost a close approximation to a smile.

"Don't worry about it," he says, even as the lines under his eyes indicate a wash of tiredness. "Pay it forward when I start kickin' holes in the bunk above you some time."

Because god knows if they start keeping score on nightmares they'll tally up the entire wall and never really figure out who owes who in the end.