Gravity lift

The Gravity Lift is Covenant graviton technology used to either levitate objects into the air via an amethyst, sparking circular beam that is refractive to plasma, or to safely drop troops in the same fashion. However, the polarity of the lift needs to be reversed in order to switch from the two different functions. They are projected from both the bowels of CCS-class Battlecruisers and Deployable Lookout Towers.

Appearances
Gravity Lifts are seen twice in the game Halo: Combat Evolved. These scenes both involve the Master Chief and the Covenant CCS-class battlecruiser Truth and Reconciliation, which can be seen projecting the lifts in the levels Truth and Reconciliation and Keyes.