Watch Modern Marvels Season 8 Episode 25 Online
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- COUNTRIES: United States of America
- Subtitles: English
The most priceless jewels in the arsenals of a handful of countries, some nuclear submarines carry more firepower than all the bombs dropped in history. Since the 1950s, these lethal steel sharks have been a cornerstone of U.S. defense policy. The Cold War launched an underwater race for supremacy with the Soviet Union. The result: engineering miracles, which roam 70% of the earth’s surface, providing deterrence to enemies, intelligence about adversaries, and an abiding sense of dread.