Sam looks up and notices that look on his brother's face. This might be a much younger version of his brother, but he knows that look. Has dealt with it FAR too many times in their lives.

Which is why, once he has the wound dealt with as best he can, he moves to grab Dean by the shoulders. One arm goes around his own shoulders while his arm goes around Dean's waist. "By this point, you'd think you'd be versed enough in how this family works to know I'm more stubborn than you are." It was one of the things Dean had to work with. Both Sam and John were incredibly stubborn, after all.

He shifts his own footing and then lifts Dean to his feet. "Come on. We're getting out of here together. You can walk or I can carry you."

He'd probably be doing most of the carrying, anyway, but giving Dean a choice made it sound better, at least.