Terminal Two is a generic United Nations Space Command term for a monorail station on an Orbital Defense Platform.
Cairo Station Terminal Two
Cairo Station Terminal Two was a United Nations Space Command monorail station aboard Cairo Station During the First Battle of Earth, it was invaded by the Covenant, and the UNSC defense coordinator ordered multiple Fire Teams to the terminal. Master Chief was present on the station and succesful repelled borders and prevented a Bomb from destroying the station.