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In page RAF Fairford:

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In the early years of the Cold War the British and American governments reached an agreement under which elements of the USAF Strategic Air Command (SAC) would be based in the UK. Bases had already been established in East Anglia, at RAF Mildenhall and RAF Lakenheath, but they were considered to be vulnerable to bomber attack and airfields further behind the RAF fighter defences were sought. Four RAF airfields were selected to receive SAC units: RAF Brize Norton, RAF Fairford, RAF Greenham Common and RAF Upper Heyford. In 1948 the Americans occupied RAF stations including Fairford, Brize Norton, Burtonwood, Greenham Common, Mildenhall, Lakenheath and Woodbridge to build up a deterrent in Europe against the Soviets.