Engineering

Engineering is a room on a UNSC ship that provides access to the engines that move the ship.

A standard Halcyon-class Cruiser has its Engineering section in the middle of the ship. The section covers nearly the entire width of the ship and is the largest single room onboard, except the hangar bay. It has four nuclear generators that power the ship. The standard Halcyon can still move with only one generator working. The engine's fusion drives are located on the third floor of Engineering and can be accessed be removing the coverings using control panels.

At the end of the Battle of Installation 04, the Master Chief overloaded the 's engines by using an explosive on each of the engine's casings.

There was a corridor leading directly to an elevator on the third floor of the Pillar of Autumn.