21x4 - Modern Marvels

Adam Richman visits power tool manufacturing "mecca" Dewalt, where he discovers how they're using cutting edge technology to make cutting edge tools. Then, he goes back in time to uncover how one of America's oldest power tools is still cutting! Next, it's time to recharge as he finds out how power tools have changed the world, from the outer reaches of space to deep under the ocean, to pit crews racing cars and rescue teams racing time.