CNN Erin Burnett OutFront April 22, 2013 23:50:00
The real shock. >> at this point we're looking for fragments. >> reporter: one bomb turned into thousands of weapons, scattered northern 100 yards. this is part of the pressure cooker. now manning sharp. no wonder so many people got hurt. instead of nails, we filled the pot with nuts from a hardware store, shot out like bullets, they pierced plywood. some even melted from the heat. look at the back of it. how fast were these things moving when they went out of there? >> they can travel a thousand, 2,000 feet a second. >> reporter: that's faster than sound. >> they'll move faster than the speed...
Source: archive.org