Secret Marine on The Covenant

In Halo 3, on the level The Covenant, when you start at Rally Point Bravo while playing on at least normal difficulty, grab a mongoose and drive straight ahead at full speed. When you get to the part where a marine says, "citadel in sight". Get off of your mongoose and grab a ghost as soon as possible. Drive the ghost ahead as normal. When you get near a tunnel, turn right and climb straight up the mountain. Occasionally, when you climb up the mountain, there may be two marines. Also, the marine will not appear when you play on xbox live or with more than one player.

Marine Details

 * The marine is similar to the one that appears in Halo 1.
 * The marine will usually change faces every time you go up the mountain.
 * The marine will carry only an Assault Rifle and will usually keep it on his back.

Video
http://www.youtube.com/watch?v=FcvTK4ewVq0