In November 2007 Essendon Airport released its latest master plan. The master plan details further proposals to expand aviation activities. These plans have been opposed by the local residents group "Close Essendon Airport" and local political representatives Kelvin Thomson MP and Judy Maddigan. A competing group known as "Save Essendon Airport" wants the airport to stay open for air ambulance services. Within one week the group had more than 500 members and over 2,000 signatures on a petition. Shortly after its launch and lobbying the then Government announced that the airport would remain.