Covenant Ship

Covenant Ship was a level in Halo 2 that was going to take place after Cairo Station, on a Covenant Assault Carrier, and would have served as Miranda Keyes's main introduction.

Content
After opening the airlock of the Cairo Station's docking bay the player would be blasted toward the Covenant ship and board it instead of destroying it with the bomb. This level would have involved infiltrating the Covenant ship, taking on and killing its crew and eventually stealing a Wraith and end up destroying the ship by bombarding its power core with the Wraith's mortar. As mentioned by Joseph Staten, Commander Miranda Keyes and her Orbital Drop Shock Troopers would have also been onboard the ship in order to help you and may have played a big role in the eventual outcome. This level however was cut due to time constraints and replaced by a cinematic that created "just as much work" for Bungie Employees.

Trivia

 * The Covenant Bomb was added in order to destroy this ship without needing the level and find a reason for John-117 to open the airlock.
 * Evidence of the level's existence can be found in the Halo 2 Announcement Trailer in which John is clearly seen jumping from Cairo Station without a bomb.