It is on there. You have to fly through till you get to Master Chief and just after him is a video label '10.1.07', that's it. It's about half way through the fly through, but you can't miss the Chief.
Correction, it's toward the end of the fly through.
Just another thought, but it does ask you your birthdate so it might filter certain videos out if you're not at least 18. Of course, if you're clever, you can just put a date in that makes you appear 18. I swear they just put those up to cover their butts.