Commander John-A222 is a SPARTAN-III commando of the UNSC Naval Special Warfare Command. He served extensively throughout the Human-Covenant War, becoming a decorated veteran and an advanced tactician. John specializes in leadership and mid-range marksmanship. In addition, he is proficient in close-quarters combat and reconnaissance. John is the leader of NOVA Team, an elite squad of Spartans that was deployed numerous times since its creation in 2545. John's call sign in the team is Nova One. He is attached the UNSC Navy but with unspecified service to the Office of Naval Intelligence.