Named after both the constellation containing the Ghost Head Nebula and a lost ship of Earth's naval past, Fireteam Dorado's composition is as mysterious as the teams mandate. Fireteam Dorado was formed during the second second class of the Spartan IV Program however little record is kept officially about the teams members, or it's missions. Led by Spartan Yates, the Fireteam deploys from the UNSC INFINITY, but has been routinely attached to the UNCS's various Special Operations Branches for 'Off the books' Missions. The Fireteam has participated most notably in the Battle of Requiem and its subsequent Campaign.