The duty uniforms were characterized by division. The primary section of the standard uniform consisted of a ribbed, corduroy-type material, with quilted shoulders and sleeves displayed in a secondary color. White, vented undershirts were worn under the uniform jacket. Members of the command division wore red uniforms with maroon shoulders; the security team wore brown uniforms with tan shoulders; engineering and operations staff wore silver with grey. (DS9: "Emissary") In 2372, members of the Deep Space 9 engineering staff began to wear green uniforms with gray shoulders. (DS9: "Bar Association", "The Assignment")