There was something in Roxy's voice, or the fact that Bobby hadn't talked to him personally, that had him worried for his nephew. He knew he was the closest thing the younger man had to a father growing up on the island, and that Bobby was his sister's son meant JR would move heaven and earth to help him if he could. Anything short of something that would harm his own family, now that he was a father.
So when Roxy called and told him, yeah he came as fast as he could.
He exited the elevator at the right level and started down the corridor at not quite a run, a small first aid bag slung over his shoulder just in case there was a need for it. Roxy had said Bobby was fine but a bit disoriented, hopefully it wasn't any more than that but he didn't want to take any chances.
If something had happened and JR couldn't help how would he look his sister in the eye when she woke up?