From Halopedia, the Halo wiki
Would you happen to have the different mission briefings from the Halo 4 Limited Edition Infinity Briefing Packet on hand? I ask because I've noticed you have access to a lot of archived material like this and we could use them on the Infinity Briefing Packet page.
Were these companies indeed mentioned in that Nightfall second story? The only reason I'm asking is because of the way you edited Atlas article: and possibly Sedra in 2556.
Please, before you write more, check your grammar.