In the height of the Cold War, a redundancy was put in place by the US Armed Forces. They put multiple planes on duty all day and all night to ensure that one plane was flying with a nuclear command centre on board. It would only be used in the event that bases on the ground were inoperable, but these planes were in the sky for an incredible 30 years. Research fellow Brendan Thomas-Noone joined ABC Radio's Nightlife program to discuss Operation Looking Glass.

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