 No. 20 Squadron is a Royal Australian Air Force ( RAAF ) support squadron . Coming under the control of No. 96 Wing , it is responsible for the management of the airfield at RAAF Base Woomera , South Australia . The squadron originated as a maritime patrol unit during World War II . Raised in August 1941 , it operated PBY Catalina and Short Empire flying boats from bases in New Guinea , Queensland and the Northern Territory , conducting search @-@ and @-@ rescue , mine @-@ laying , anti @-@ submarine and bombing missions against Japanese targets in the Pacific theatre . Following the conclusion of hostilities , the squadron was disbanded in March 1946 . It was reactivated as an airfield support squadron in April 2015 . 
