[Korra open her mouth and then closes it, trying to figure out just why Jim would do that to his commanding officer.]

It was broken in a bar fight and he needed a metal plate to hold it together. [Now she knows why he didn't like to bring it up, it almost felt wrong to do so.] The next time he came to visit me, I sat him down [Yes, she managed to wrangle down one James T. Kirk.] and healed up the spiral fracture.

[And she takes a breath like she's about to continue, but she stops and exhales with a nod.]