The S-75 is a Soviet-designed, high-altitude air defence system. It is built around a surface-to-air missile with command guidance. Following its first deployment in 1957 it became one of the most widely deployed air defence systems in history. It scored the first destruction of an enemy aircraft by a surface-to-air missile, with the shooting down of a Taiwanese Martin RB-57D Canberra over China on 7 October 1959 that was hit by a salvo of three V-750 (1D) missiles at an altitude of 20 km (65,600 ft). This success was credited to Chinese fighter aircraft at the time to keep the S-75 program secret.
S-75 Guideline missile on display at the National Air and Space Museum
Rear view showing the solid-propellant booster nozzle, as displayed in Imperial War Museum Duxford
The S-75 in transport configuration
Francis Gary Powers was an American pilot whose Central Intelligence Agency (CIA) Lockheed U-2 spy plane was shot down while flying a reconnaissance mission in Soviet Union airspace, causing the 1960 U-2 incident.
Powers while he was in Soviet custody
Wooden U-2 model – one of two used by Powers when he testified to the Senate Committee. The wings and tail are detached to demonstrate the aircraft's breakup.
Pilot Francis Gary Powers at the American High Altitude Lockheed U-2 reconnaissance aircraft