Rumbler siren
... that since its 2007 debut in the United States, the Rumbler siren has been adopted by emergency services in Australia and Singapore?
... that since its 2007 debut in the United States, the <b id="mwBhQ"><a href="./Rumbler_siren" id="mwBhU" rel="mw:WikiLink" title="Rumbler siren">Rumbler siren</a></b> has been adopted by <a href="./Emergency_service" id="mwBhY" rel="mw:WikiLink" title="Emergency service">emergency services</a> in Australia and Singapore?