Final answer:
Eisenhower's massive retaliation strategy was exemplified by the continuous airborne readiness of Strategic Air Command bomber squadrons, the deployment of nuclear-armed submarines, and the global network of underground missile silos. These measures served as a deterrent under the Mutually Assured Destruction doctrine.
Step-by-step explanation:
During Dwight D. Eisenhower's presidency, massive retaliation was a key component of his foreign policy strategy. This approach meant that any Soviet attack on the United States would be met with a powerful nuclear response. One clear example of the implementation of this strategy was the establishment of the Strategic Air Command (SAC), which maintained bomber squadrons with nuclear missiles continuously in the air, prepared to strike back in the event of a Soviet first strike.
Additionally, the United States deployed nuclear-armed submarines capable of remaining submerged for extended periods, and constructed underground missile silos both domestically and at bases around the world. These measures ensured that the USSR could not launch a disabling first strike without facing a devastating counterattack from the remaining US arsenal. As such, massive retaliation served as a deterrent, part of the broader doctrine of Mutually Assured Destruction (MAD), preventing the Soviet Union from considering the option of a nuclear attack.