During the Cold War, the U.S. assumed nuclear war wasn’t a question of if, but when. So it built an entire command city deep inside Cheyenne Mountain, sealed behind blast doors heavier than tanks.

The NORAD Cheyenne Mountain Complex dates back to the height of the Cold War. Initially meant for defense against long-range Soviet bombers, it now provides backup and training. The self-sufficient ...

As global tensions rise, many people are asking: is World War III possible? While no large-scale war has started, nations are preparing for worst-case scenarios. The United States has one of the most ...