"Thanks Tom." JR nodded. "I'll make sure younger you gets scanned when you switch back, it'll give us something to compare it to. Maybe there's a treatment he can use to limit the damage until we can find a permanent fix."
He didn't want to keep beating the subject in the ground or further upset his brother, so he glanced out the window and took a sip of his coffee. If Tom wanted to change the subject here was his opportunity.