Jim and Sam, strong brotherly bond

I recently reread a fic that in passing described Jim and Sam as like two wolf cubs - protecting each other, relying on each other etc. And I wondered if there were any fics out there where Sam didn't leave, or if he did he took Jim with him. So as a result hey grew up together and rely on each other and they're still tight even after Jim's at the Academy? Any recs would be greatly appreciated.