[quote][b]Posted by:[/b] masterchiefloser I really hate to have to be the one to say this, but Johnson is not a S1. [/quote] So why was he a part of Project ORION? [quote] There's a reason for this that was stated in [i]First Strike[/i] [/quote] First Strike never gives a reason that he is not a Spartan I. [quote] There was a specific gene Johnson had that made him immune to the Flood's disease of taking over the person's body. [/quote] First Strike says that he had Boren's Syndrome, which disrupted his nervous syndrome so that the Flood couldn't force a match. Dr. Halsey said that this was caused by using an entire crate of plasma grenades on Paris IV. In the Halo Graphic Novel we learn that when Dr. Halsey tried to get Johnson's medical information she got the "Paris/BS spoof" The Boren's Syndrome is not the reason for his survival.