Hi everyone. I'm looking for a gen story where Sam is recruited out of Stanford to join this covert military group. John was a part of it when he was in Marines. They blackmail Sam into joining or they will arrest Sam, Dean, and John. After Sam does his time, he starts hunting again but he has a team to help him. He meets up with John and Dean. John is proud of him, but Dean is horrified about what Sam has done. It ends with Sam spending Christmas with his team instead of John and Dean.

I hope somebody knows this story because I would love to read it again. Thanks.

Edit: Found. Link in comments. Thanks.