Where Is Reach's Forge World?

I Mean, I Know It’s On One Of The Many Halos, But I’m Trying To Do a Machinima, Where The Protagonist Escapes Reach But Somehow Discovers One Of The Halos. Just To Know Which Is The One Where Forge World Is.

I don’t think it’s been officially announced which Halo ring Forge World is on. Just make up something. Anything besides Installation 04 or 05.

Well, I’ll Choose 07 Then, Thanks Anyway.