During their service with Soviet Anti-Air Defense and in East Germany, MiG-19s were involved in multiple interceptions of Western reconnaissance aircraft. The first documented encounter with a Lockheed U-2 took place in the autumn of 1957. The MiG-19 pilot reported seeing the aircraft, but could not make up the 2,234 m (7,000 ft) difference in altitude. When Francis Gary Powers's U-2 was shot down in the 1960 incident, one pursuing MiG-19P was also hit by the salvo of S-75 Dvina(NATO: SA-2 "Guideline") missiles, killing the pilot Sergei Safronov. In a highly controversial incident, on 1 July 1960, a MiG-19 shot down an RB-47H (S/N 53-4281) reconnaissance aircraft in international airspace over the Arctic Circle with four of the crew killed and two captured by the Soviets (they were released in 1961). In another incident, on 28 January 1964, a MiG-19 shot down a T-39 Sabreliner which had strayed into East German airspace while on a training mission; all three crewmembers were killed.