No. 33 Squadron is a Royal Australian Air Force (RAAF) strategic transport and air-to-air refuelling squadron. It operates Airbus KC-30A Multi Role Tanker Transports from RAAF Base Amberley, Queensland. The squadron was formed in February 1942 for service during World War II, operating Short Empire flying boats and a variety of smaller aircraft. By 1944 it had completely re-equipped with Douglas C-47 Dakota transports, which it flew in New Guinea prior to disbanding in May 1946. The unit was re-established in February 1981 as a flight, equipped with two Boeing 707s for VIP and other long-range transport duties out of RAAF Base Richmond, New South Wales. No. 33 Flight was re-formed as a full squadron in July 1983. By 1988 it was operating six 707s, four of which were subsequently converted for aerial refuelling. The 707s saw active service during operations in Namibia, Somalia, the Persian Gulf, and Afghanistan. One of the transport jets was lost in a crash in October 1991. No. 33 Squadron relocated to Amberley and was temporarily without aircraft following the retirement of the 707s in June 2008. It began re-equipping with KC-30s in June 2011, and achieved initial operating capability with the type in February 2013. One of its aircraft was deployed to the Middle East in September 2014 as part of Operation Okra, Australia's contribution to the war against the Islamic State. The squadron maintained a KC-30 on Okra for the next six years, completing 1,440 air-to-air refuelling missions. Role and equipment No. 33 Squadron is responsible for aerial refuelling and long-range transport. It is located at RAAF Base Amberley, Queensland, and controlled by No. 86 Wing, which is part of Air Mobility Group. The unit headquarters comprises executive, administrative and operational components. As well as aircrew, the squadron is staffed by maintenance personnel responsible for regular aircraft service. Heavier maintenance is conducted by Northrop Grumman Integrated Defence Services (formerly Qantas Defence Services). No. 33 Squadron's motto is "Enduring". The squadron operates seven Airbus KC-30A Multi Role Tanker Transports, the first of which entered service in June 2011. The aircraft are crewed by pilots, refuelling operators, mission coordinators, and flight attendants. Air-to-air refuelling is considered a force multiplier, permitting the RAAF to increase the range and loiter time of its aircraft. The ability to refuel in flight also enables aircraft to take off with more ordnance than they might otherwise. The KC-30 can carry