O'Brien was a member of the UNSC Marine Corps who participated in the Human-Covenant war, and an Orbital Drop Shock Trooper in the 105th Marine Expeditionary Unit. At some time between 2542 and 2552, he was assigned to a squad led by MSgt Cortez, as a part of the Marine contingent aboard the UNSC Kronstadt.
| Identifier (URI) | Rank |
|---|---|
| dbkwik:resource/dHziXRnIfMmqrmD9_igw6A== | 5.88129e-14 |
![[RDF Data]](/fct/images/sw-rdf-blue.png)
