Fireteam Switchback is a unit consisting of Spartan-IV super soldiers. Switchback was one of the known Spartan contingent units aboard the UNSC Infinity during the Second Battle of Requiem in early 2558.
While conducting an operation to disable a Covenant Harvester, the entire team was captured. They were later found and rescued by Fireteam Crimson. However, although Fireteam Crimson rescued them, the team's leader, Cara Costabile, was killed by the Covenant.