Talk:NYPD Uniforms and Ranks/@comment-24.107.75.166-20170414194931/@comment-46125051-20200618163709

There is no collar brass as "DD". Its "DB" for Detective Bureau. But if assigned to a special unit he would wear that unit's collar brass (i.e.: Police Commissioner's Office = PCO; Intelligence Bureau = IB; Strategic Response Group = SRG and so on).