Drop pod glitch
From Halopedia, the Halo wiki
The Drop Pod Glitch is a Halo 3 campaign glitch.
You can get in a drop pod using this glitch. It can be found in the level Floodgate. Play up to the point at Rally Point Alpha and get a checkpoint in a co-op game. Then get the player who is playing as the Arbiter to press RB near a pod and you will enter it.
Note: There is only one drop pod you may enter, and that pod is random, it will be a different one each time.
