Part of the 108th Infantry Battalion, Private Beckett was part of Sergeant Daniels' squad and fought alongside Elliott Tercorien when he had to. However, being part of a medical team, Beckett's primary function was to carry stretchered troops to safety, either for evacuation or swift on-site medical attention.
Among the Stars: He can be revived from his stasis pod along with Sergeant Daniels, either without Elliott preparing their memories (in which case, Beckett is hostile), or after their memories return (in which case, Beckett fights alongside you until falling during the assault on the cryo storage facility).
Both he and Daniels lose health naturally over time and will not heal themselves, even if somehow given stimpaks; this will eventually lead to their deaths. Additionally, Beckett and Daniels will die immediately upon the destruction of the cryo lab generator as part of a scripted event.