▁the ▁UK USA ▁Ag re ement ▁and ▁the ▁members ▁of ▁the ▁E CH EL ON ▁network ▁including ▁Australia , ▁New ▁Zealand , ▁United ▁Kingdom , ▁Canada ▁and ▁the ▁United ▁States . ▁ ▁In ▁almost ▁a ▁hundred ▁U . S . ▁emb ass ies ▁and ▁cons ul ates ▁world wide , ▁St ater oom ▁operations ▁are ▁conducted ▁by ▁the ▁Special ▁Collection ▁Service ▁( SC S ), ▁a ▁unit ▁that ▁is ▁joint ly ▁operated ▁by ▁the ▁Central ▁Int elligence ▁Agency ▁( CI A ) ▁and ▁the ▁National ▁Security ▁Agency ▁( NS A ). ▁ ▁According ▁to ▁documents ▁le aked ▁by ▁Edward ▁Snow den , ▁the ▁true ▁mission ▁of ▁St ater oom ▁personnel ▁is ▁generally ▁not ▁revealed ▁to ▁the ▁rest ▁of ▁the ▁diplom atic ▁staff ▁at ▁the ▁facilities ▁where ▁they ▁are ▁assigned . ▁ ▁M embers ▁▁ ▁  – ▁Australian ▁Sign als ▁Director ate ▁( AS D ), ▁formerly ▁known ▁as ▁the ▁Def ence ▁Sign als ▁Director ate ▁( D SD ) ▁  – ▁Communic ations ▁Security ▁Est ab lish ment ▁( C SE ) ▁  – ▁Government ▁Communic ations ▁Head quarters ▁( G CH Q ) ▁  – ▁Special ▁Collection ▁Service ▁( SC S ) ▁  – ▁Government ▁Communic ations ▁Security ▁Bureau ▁( GC SB ) ▁ ▁Oper ations ▁ ▁Note : ▁The ▁list ▁of ▁locations ▁in ▁the ▁following ▁section ▁is ▁non - ex ha ust ive , ▁and ▁only ▁includes ▁public ly ▁dis closed ▁information . ▁▁ ▁Australia ▁▁ ▁The ▁collection ▁of ▁signals ▁intelligence ▁by ▁Australian ▁emb ass ies ▁and ▁high ▁comm issions ▁occurs