Team Deadeye is a squad of Spartan Commandos formed in July of 2552 in response to the Winter Contingency order given with the discovery of Covenant forces on the surface of Reach. The team Operates under the UNSC's Naval Special Warfare Group Three. Conducting high risk counter invasion operations against the Covenant forces in the Epsilon Eridani system and on the surface of Reach itself. In late August with the arrival of the main Covenant fleet, the UNSC knew they were on the losing side and began a mass evacuation of Reach and nearby systems. The UNSC HIGHCOM ordered any available units to be sent to assist with breaking the Covenant Siege of the planet Tribute.