Security R-01
From Halopedia, the Halo wiki
Security R-01 is a generic United Nations Space Command term for one of the security stations on the port side of an Orbital Magnetic Accelerator Cannon Platform. It overlooks Commons R-01.
Cairo Station Security R-01
Cairo Station Security R-01 was the United Nations Space Command portside security station of Cairo Station further from the bridge. During the First Battle of Earth, Covenant boarders invaded the security station, but were repulsed by SPARTAN-117.