Team X-ray
From Halopedia, the Halo wiki
Little is known about "Team X-ray".[1] They were a team in the Spartan-III Program's Beta Company series that went missing during training near the aptly named "Zone 67". The other Spartan trainees thought that they were taken by the Drill Instructors but that possibility is not known and very unlikely. It is more likely that they were killed or taken captive by the Sentinels that occupy the area. But there is a small chance of Team X-ray surviving in a ONI base deep in "Zone 67".
