Blue Team

Blue team is the usual designation for the Master Chief's squad. Originally comprised of Spartan 117 John, SPARTAN-034, Sam, Spartan-087, Kelly, Spartan-058, Linda, and Spartan-104, Fred. After Sam's death on the Covenant ship, he was replaced by Spartan 051 Kurt. After that, kurt was presumed dead, when he was taken by Ackerson to train the Spartan III's.   It is unknown who takes Kurt's place after this.

Blue team is usually comprised of these five members, but has been changed in different occasions. It is the name of the team John is in, for the most part. Fred-104 is the team leader if John isn't present or not in charge of Red Team.

Blue Team is not always neccessarily comprised of these members at all. We see that in Fall of Reach, that the Master Chief picks James and Linda to be on his team, and sent the rest to the surface of Reach. Also, on the final page of Ghosts of Onyx, we see that the Spartan III's Ash, Mark, and Olivia joined Kelly, Fred, and Linda in Blue Team.