Stone opened his mouth when Lara turned in his general direction but she was shouting for Karl and jogging by before he could speak. So he just headed over toward her and Karl with the folding table and just waited his turn.
He didn't want to interrupt and Lara could get pretty...crazy, with the setting up stuff and all. So he rocked on his heels and little and looked around...and tried not to think about the awkward unmentionable stuff. He didn't need to make the hectic STS stuff even more hectic by trying to get all important- conversation-happy with Lara. Things were still already awkward enough after all.