In Victoria it's (Vic Pol) SOG guys who'd handle this type of scenario, I believe. NSW Police should have the equivalent.
+1 to less hysteria, more appropriate response.
Otherwise it's simply feeding the monster.
Do the various hysterical dicks (public, politicians, or media) not realize they are doing *exactly* what those terrorist groups want?
Not wanting to trivialize a terrible situation, but it's slightly similar to how you'd respond to a child throwing a tantrum - doing what they want (publicity, hysteria and polarization) simply reinforces the terrible behaviour.