æt ðæt tˈaɪm, nˈoʊ. twˈɛnti wˈʌn skwˈɑːdɹən kənvˈɜːɾᵻd tʊ ɐ nˈɑːnflˈaɪɪŋ səpˈoːɹt ɹˈoʊl, wˌɪtʃ ɪt kˈɜːɹəntli fʊlfˈɪlz æt ɹˈɑːf wˈɪljəmz.
At that time, No. 21 Squadron converted to a non-flying support role, which it currently fulfils at RAAF Williams.