Hangar A-02

Hangar A-02, also known as Hanger Bay B, is a generic United Nations Space Command term for one of the two-story Pelican hangars on the port side of an Orbital Defense Platform, such as Cairo.

Cairo Station Hanger A-02
During the First Battle of Earth, Hangar A-02 was invaded by Covenant boarders directly also. A Covenant Boarding Craft had docked and was sending forth waves of Grunts and Elites. Marine defenders were overwhelmed and forced to retreat to the mouth of the bay, where several soldiers equipped with Battle Rifles were under suppressive fire from two Plasma Cannons manned by Heavy Grunts on the second floor of the hanger. Spartan-117 then arrived from Hangar A-01, bolstering the Marine forces. The group was able to kill most of the Covenant boarders and force the survivors to retreat back to their landing ships. It is here they witnessed the destruction of the Athens.

Trivia

 * It is generally considered one of the hardest checkpoints in the entire game to finish on Legendary or Heroic, due to the large number of enemy forces faced and the equipment they use.