The airfield opened in early July 1943 with a dedication ceremony for the Stansted Airfield with a parade of builders, the 825th Engineer Aviation Battalion EAB and the 850th Engineer Aviation Battalion EAB of the United States Army, along with a small group of the British Royal Engineers who offered to help and wanted to learn how to operate the heavy construction equipment. Stansted Mountfitchet Airport was used during the Second World War as RAF Stansted Mountfitchet by the Royal Air Force and the United States Army Air Forces as a bomber airfield and as a major maintenance depot. Although the official name was Stansted Mountfitchet, the base was known as simply Stansted in both written and spoken form. The station was first allocated to the USAAF Eighth Air Force in August 1942 as a heavy-bomber airfield. As well as an operational bomber base, Stansted was also an Air Technical Services Command maintenance and supply depot concerned with major overhauls and modification of B-26s. After D-Day, these activities were transferred to France, but the base was still used as a supply storage area for the support of aircraft on the continent. After the withdrawal of the Americans on 12 August 1945, Stansted was taken over by the Air Ministry and used by No. 263 Maintenance Unit, RAF, for storage purposes. In addition, between March 1946 and August 1947, Stansted was used for housing German prisoners of war. In November 1946, the recently established British cargo airline, London Aero and Motor Services, equipped with ex-RAF Handley Page Halifaxes, moved into Stansted, using it as a base for its operations until it was wound up in July 1948. The Ministry of Civil Aviation finally took control of Stansted in 1949 and the airport was then used as a base by several UK charter airlines. The US military returned in 1954 to extend the runway for a possible transfer to NATO. The transfer to NATO was never realised, however, and the airport continued in civil use, ending up under BAA control in 1966. During the 1960s, '70s, and early '80s, the Fire Service Training School was based on the eastern side of the airfield under the auspices of the Ministry of Transport and Civil Aviation, now the Civil Aviation Authority. The school was responsible for the training of all aviation fire crews for British airfields, as well as those of many overseas countries. Beginning in 1966, after Stansted was placed under BAA control, the airport was used by holiday charter operators wishing to escape the higher costs associated with operating from Heathrow and Gatwick. Stansted had been held in reserve as a third London airport since the 1950s. However, after a public inquiry at Chelmsford in 1966–67, the government set up the Roskill Commission to review the need afresh. The Commission for the Third London Airport (the "Roskill Commission") of 1968–71 did not include Stansted as one of its four short-listed sites and recommended that Cublington in Buckinghamshire should be developed as London's third airport. However, the Conservative government under Ted Heath agreed with a minority recommendation that a site at Foulness in the Thames Estuary, later renamed Maplin, should be developed, but in 1974, the incoming Labour government under Harold Wilson cancelled the Maplin project because of the economic situation. Stansted was then considered as an option for long-term development in the Advisory Committee on Airports Policy and the Study Group on South East Airports and was selected from a short list of six by the Conservative government in December 1979. The proposal, for a new terminal associated with the existing runway and the safeguarding of land for a second runway, was considered at the Airports Inquiries of 1981–83.