In past centuries, China was very innovative and developments included gun powder and the compass.

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U.S. Rep. Mike McCaul, chairman of the House Homeland Security Committee, said "most likely gun powder" was used in the devices.

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Where media budget and creativity used to be the gun powder of a campaign, now the real fire power comes from creativity itself.

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If there are no comparable bruises or grass stains and if the bullet wound and powder residue establish that the gun was fired at very close range, this too might support a claim of self-defense.

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But if you heat up the alloy until it liquefies--Branagan's powder must be heated to 1, 200 degrees Celsius and applied with a thermal spray gun--it turns into an ashy powder as it cools, a metallic glass with "frustrated" molecules, as Branagan calls them, anxious to form a lattice, but confined by their inability to move.

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