ˈɑːpɚɹˌeɪɾɪŋ wˈʌns mˈoːɹ ˌaʊɾəv sˈɛmbɐwˌæŋ, twˈɛnti wˈʌn slˈæʃ fˈoːɹhˈʌndɹɪd fˈɪfti θɹˈiː skwˈɑːdɹən, æz ɪt bɪkˌeɪm nˈoʊn, flˈuː kˈɑːnvɔɪ ˈɛskɔːɹt, ɹᵻkˈɑːnɪsəns, ˈɛɹ dᵻfˈɛns ænd bˈɑːmɚɹ ˈɛskɔːɹt mˈɪʃənz.
Operating once more out of Sembawang, 21/453 Squadron, as it became known, flew convoy escort, reconnaissance, air defence and bomber escort missions.