When did How Do They Do It? Season 3 Episode 13 air?
How Do They Do It? Season 3 Episode 13 aired on April 4, 2007.


An insider's look at the engineering and scientific miracles behind the things that form the modern world.
Discover how formation skydivers train in a wind tunnel, and learn how a bullet proof vest can stop a dozen rounds at point blank range.
Direct answers for episode-level questions and details.
How Do They Do It? Season 3 Episode 13 aired on April 4, 2007.
This episode runs for approximately 22 minutes.
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