Jack's prowling slightly, still on alert, not allowing himself to get too stationary in case he has to move on a moment's notice. But if there are any more splicers out there, they don't make themselves known. It does look like the coast is clear.

Slowly, he starts to wipe his wrench off on his trouser leg.

Now that they're out of danger, he's not too worried about Sinclair's wellbeing; Jack has sustained far worse on the battlefield and come back good as new. Silently, he pulls a med kit out of his inventory and holds it out where Sinclair can reach.