It's that tone, and for some reason its almost a relief to hear it from Rhodey. It means that things are getting better. Better in the sense that Rhodey's at least feeling like himself.

The only downside to it was the fact that he could read Tony like an open book.

He sighed and put his burger down. It wasn't as good as In-N-Out, anyways. How was he going to say this? How was he going to simply apologize for what happened? He wasn't going to make things better. He couldn't give Rhodey his legs back. He couldn't take back everything he'd done. He couldn't make things right between his team or the world or the damn country.

He couldn't fix anything.

"I'm sorry." It was all he could say but it didn't fix anything. It didn't do a goddamn thing.