CNN Anderson Cooper 360 April 23, 2013 05:42:00
A hardware start. shot out like bullets, they pierced hard wood. some even melted from the heat. look at the back of it. how fast were these things moving when they went out? >> they can travel a thousand, 2,000 feet a second. >> that's faster than sound. >> that's right. they'll move faster than the speed of sound. these things will get in front of the shockwave and hit you before the pressure wave does. >> you're hit before you even hear it. >> that's right. >> here is what the blast looks like using a high-speed camera. an intense ball of fire less than 20 feet across. but watch the white r...
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