Recreation R-01
From Halopedia, the Halo wiki
Recreation R-01 is a generic United Nations Space Command term for the Recreation area on the port side of the Bridge on an Orbital Defense Platform. It consists of video phones for contact with Earth or other vessels, as well as screens dictating information about Cairo Station.
Cairo Station Recreation R-01
Cairo Station Recreation R-01 was the United Nations Space Command recreation of Cairo Station on the portside of the bridge. During the Battle of Earth, it was one of the first areas invaded by Covenant. John-117 aided Sergeant Johnson and the Marines stationed there in repulsing the boarders before moving on to Security R-01.