Phantom Riding Glitch

In the level crow's nest you can get on to one of the Phantoms and it will take you out of the map.

Method
1.Jump on to one of the high things at the righ and left inside the hanger where you save a few marines.

2.When the phantom comes jump on top of it and grab one of the turrets.

3.It will take you out of the map without getting you killed by the death barrier.

Trivia

 * You have the ability to flip the phantom once it crashes near the rocks.
 * In free cam in theater mode you can see the ship inside the air but it doesn't have another side.
 * Also in theater mode you can see the hornets and banshees fighting in the air.