O'Green received a Behavioral Science degree from United States Air Force Academy. He has been a fighter pilot, trained in the Army Recondo program, taught Small Element Tactics at the Air Force Academy, and worked as a superintendent of schools in England.[1]
He is a member of SIGMA, a group of science fiction writers founded to consult the government and non-governmental organizations on possible future attacks,[1] and is on the advisory board of Lifeboat Foundation, an organization encouraging scientific advancements, while finding ways to prevent misuse of advanced technology and "helping humanity survive existential risks".[2]
He has been a Designer, Producer, and Executive Producer for Interplay, Sony Online, Sierra/Verant and others while working on titles such as Star Trek, Lord of the Rings, Marvel, and Everquest.