[He didn't expect him to fully relax, but he does seem at least reassured by his response-- yeah, he knows they'll be alright. But he knows to trust Keith's senses on this sort of thing, and it's not as if he isn't ready and on guard, too.]
Want me to come with you? [It's supposedly a question, but it's said in a tone that makes it clear there's only one acceptable answer. If something does happen, he's not about to let you be on your own.] I'm all finished up here.