That the tribe he we was in nuked an oil rig to obtain a G.E.C.K,would this happen to be the same oil rig the Emclave where based out of?

Yes. And he wasn't in a tribe. He traveled with a tribal, who was the Chosen One. He is the protagonist of FO2. Marcus is recruitable in that game.

Ah,I heard he use that term,but thought he meant tribe.

And I ,like a few,I suspect.came across the series through F.O 3.

Marcus is AWESOME!

My favorite companion ever!