Jack's not entirely happy with that clicking. It feels a little too conspicuous.

"Steinman," he reminds the good doctor. Speaking of which, as nice as sane conversation is, he should get away and continue the search. He had to turn back when Steinman brought that rubble down, and who knows how far the guy has run by now.

He starts to peel away quietly, falling behind Kostya and looking around to re-orient himself. Okay, tunnels are that way. Let's do this.

"Uh... good luck," he adds. It seems the thing to do.