Armory A-01

 is a generic United Nations Space Command term for any armory and armor testing facility on the port side of an Orbital Magnetic Accelerator Cannon Platform.

Cairo Station Armory A-01
Cairo Station Armory A-01 was the United Nations Space Command armory on the port side of Cairo Station. During the First Battle of Earth, Covenant boarders invaded. Stealth Elites armed with Plasma Rifles killed the Master Gunnery Sergeant, who was equipped with a shotgun. SPARTAN-117, from Hangar A-02, moved too slowly to save the UNSC soldier, but was able to avenge him.