 One RB-47 even managed to fly 450 miles inland and photograph the city of Igarka in Siberia.The 70th SRW also assumed an air refueling mission in 1955 and was deployed at Sidi Slimane Air Base, Morocco, from 26 October to 17 December 1956.Beginning in February 1958, operations with the RB-47 were reduced, primarily as the aircraft was determined to be vulnerable to Soviet air defenses, but also its mission was being taken over by the Lockheed U-2.