That's the name of the game, now isn't it? Almost every role playing game, TV show, movie, and video game kicks off with this forged friendship that sees them through thick and thin with little reason for such loyalties. Star Trek comes to mind. Captain meets crew- *poof* suddenly they are a "family" and even a transfer or promotion is seen as a funeral. LOL! I just figured I would run with it.

Besides, Redshirts are almost always slavishly loyal even unto death. I think it is a clause on their birth cirtificates.