Launch Bay 7

Launch Bay 7 was a part of the United Nations Space Command Halcyon-Class Cruiser Pillar of Autumn. It held a single C709 Longsword-class Interceptor, which was used by the Master Chief and Cortana to escape from Installation 04 (a.k.a. Alpha Halo). It also has enough storage capacity for sixteen Pelican dropships and a large number of Scorpions and Warthogs.

This Hangar bay can be seen in the last cutscene on the level "The Maw", but might be also the one seen at the beginning of the level "The Pillar of Autumn".

Launch Bay 7 seems to be similar to the hangar bay on the level Crow's Nest in Halo 3. If it was intentional on Bungie's part or just pure concidence is not known.