Stuff They Don't Want You to Know
The World's Underground Bases
How many underground bases exist today? Is there any way to figure out what's stored in the world's various secret bunkers? Learn more in today's video.
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Stuff They Don't Want You to Know: The Battle of Los Angeles
In the early hours of February 25th, 1942, air raid sirens resounded across Los Angeles, California. The military fired roughly 1500 anti-aircraft machine gun rounds and artillery shells at some unknown object in the sky. So what really happened?