EarthForce "Duty Uniform" Security Dept.      Security uniforms are worn by those who station and/or ship security personnel. On B5, the CoS, Micheal Garibaldi, was a Chief Warrent Officer; as such, he wore the NonCom/WO uniform, which basically differed from the regular uniforms by the color scheme. The posiiton bar of a Security Officer is a deep forest green.
When stationed aboard a station or ship, EarthForce Non-commisioned personnel wear this uniform design. Commissioned Officers, as well as GROPOs (Ground Pounders, aka Marines) all have a different design uniform.
Uniforms: EarthForce Uniforms: Duty, Security