Description:
"This looks like a perspective cinematic that would be used right before you get done with the tank segment. It also looks like it was going to have the hornets and pelican fly in right after the scarabs land.

A perspective cinematic is one that you can skip and will still have it running during gameplay. Take the one from the first level where Johnson gets his ass beat, That's a perspective cinematic.

Cinematic name is cinematics\ubercam_exports\100pb_scarab_­orbital\100pb_scarab_orbital"

I heard theres more of these floating around, Bungie had allot more cinematics planned that were cut.