 Complete the following phrase:  Formed in April 1944, No. 81 Wing comprised three flying units, Nos. 76, 77 and 82 Squadrons, operating P-40 Kittyhawk fighters in the South West Pacific theatre of World War II. Following the end of hostilities, the wing converted to P-51 Mustangs and was based in Japan as part of the Allied occupational forces; it disbanded there in November 1948. Re-formed at Williamtown in January 1961, its complement included Nos. 75 and 76 Squadrons, and No. 2 Operational Conversion Unit, operating CAC Sabre jets. The Sabres were deployed to RAAF Base Darwin, Northern Territory, in 1964 to guard against possible attack by Indonesian forces during the 