[Marsh can't feel Riddick's emotions, or sense them in any internal way, but he can see his reactions, the tapering stuggle, the widening eyes. He soothes Riddick's fear, too, but more gently, still clumsy but just enough to take the edge off the panic.]

I'm going to put you back on the cot.

[A dual purpose warning: to judge how badly Riddick reacts to the idea, and to hopefully cut down on Riddick's instinctive reactions by not surprising him.]