Although the UFO files were available to Defence personnel and Civilians Defence personnel for years, these files remained closed to outside researchers. In October 1979, extensively through the efforts of VUFORS researchers and Fl/Lt Brett Biddington (later Group Captain – RAAF), the RAAF invited Victorian researchers to visit the Intelligence Cell at RAAF Headquarters Support Command, Victoria Barracks, Victoria, to view the majority files collection and copy what they wished. This was a significant 'turn around' by the Defence Force, but it was the start of a period of remarkable co-operation between government departments and civilian groups. It was not until 1981 that another change in policy was instigated. A selection of general UFO files could be sent to Defence HQ, Russell Office, Canberra, when requested. The limited selection became open to other civilians for research after being vetted by a second controlling officer, but after their inspection they were returned to the Victorian collection.