Historically, an army could have days, weeks, or even months to prepare for a war.

However, with the development of intercontinental missiles and nuclear weapons,

the time for preparation was reduced to hours or even minutes.

In light of those changes, it was necessary to develop a

system that allowed for rapid mobilization and readiness. Learn more about the

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In 1957, the United States and Canada announced the creation of the North American

Aerospace Defense Command, or Norad.

Their mission was to monitor the skies above North America, primarily to detect incoming

Soviet bombers or missiles.

As part of the development of the command, they created a warning

system so they could mobilize defense forces at a moment's notice. However, the first system

...