Following French President General de Gaulle's requirement for all foreign nuclear forces to leave France, there was a major readjustment of USAF deployments in Western Europe, and the B-47 deployments ended. On 1 September 1959, jurisdiction of Chelveston was transferred from SAC to USAFE. Control of the base was assigned to the 10th Tactical Reconnaissance Wing at RAF Alconbury, which had been moved from West Germany to England. The 10th TRW could not accommodate all four squadrons of the wing at Alconbury, so one was based at Chelveston, which became its satellite. The mission was changed to support Douglas RB-66C Destroyer Reconnaissance aircraft of the 42d Tactical Reconnaissance Squadron. The first B-66s arrived at the base on 26 August and by mid-18 September all were present. The squadron's activities consisted of specialized electronic reconnaissance and electronic countermeasures.