Barnes joined the Army prior to 9/11. He as in Ranger School when the attacks happened. After making it through Ranger School he went to the 75th Ranger Regiment and shipped out. His time in the field gave him invaluable experience.
When Stalker was creating his team Barnes was top on his list. Now serving as Stalker's right hand man and top sergeant he helps lead the team against the combined threats of Cobra and the undead.