Hellboy's known enough military guys over the years to at least vaguely recognize that wistfulness. Even without any idea of Mike's real capabilities, he knows that corpsmen are as much soldiers as they are healers, and that he'd been kidnapped directly from the field. Not too surprising that the guy's used to being out there.

He nods, acknowledging it. "I'll keep that in mind. Take it easy." He heads out, lights up a cigar once he gets outside of the Inn, and goes looking for the next trouble spot.