Halo 2 Easter Egg - Rex on Great Journey

This Is a writing egg on the campaign level "The Great Journey." Go through the level until you get to the part with the Banshee. Then, land on the ground and continue. there should be a few spectres. DONT BLOW THEM UP! Hijack one of them and keep driving off the cliff, down onto the ground, and keep going. (If you are on a beach with the Great Journey control room in front of you, you are in the right spot.) Drive into the water to the right and keep going.(you will not die.) If you find it, there is a ledge that comes up from the water over to the right. Drive up that and swing left once you are on the land with the big structure. From there, you take one of the paths up to the top on the narrow ledges in the spectre. Once you get up there, it gets a little trickier. You must grenade jump(Throw a grenade or two to the ground and jump or throw a grenade and get in your spectre) and try to blow yourself to the top ledge. Dont get Discouraged, It takes a while. Once you get up there, your reward is The word REX written in bullets, The name of one of Halo 2's creators! (Rex also made his signature in blood on the original halo game, but thats a different story!)