ðɪs həznɑːt hˈæpənd æɾ ˌɛni tˈaɪm dˈʊɹɹɪŋ ɔːstɹˈeɪliən pˈiːstaɪm, bˌʌt wʌz dˈiːmd nˈɛsᵻsɚɹi bɪkˈʌz ʌvðɪ ɪlˈɛvən sɛptˈɛmbɚ tˈuː θˈaʊzənd wˈʌn ɐtˈæks sˈɪks mˈʌnθs ˈɜːlɪɚ.
This has not happened at any time during Australian peacetime, but was deemed necessary because of the 11 September 2001 attacks six months earlier.