The US military was stunned by the Soviet Union’s successful launch of Sputnik on October 4 1957.
For the first time in history, a man-made satellite was orbiting the earth.
The arms race became even more intense as the Americans feared Russian technology was giving them a tactical edge.
This increase in tension was felt all around the world.
With its weapons bases, nuclear bunkers, and spy centres, Scotland played its part in this titanic struggle between East and West.
While the conflict may be over, some fascinating ruins of these Cold War facilities can still be found in Fife.
