【熟肉】解释每个美军战备状态
https://www.youtube.com/watch?v=lS4ZDwBhu7I
https://www.youtube.com/watch?v=lS4ZDwBhu7I
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DEFCON is the U.S. military's five-level alert system that measures the threat of war. In this video, we explain what each level means, from the normal peacetime of DEFCON 5 to the brink of nuclear annihilation at DEFCON 1, and explore the real-world crises that triggered them.
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