Front-line forces in future wars may find themselves toting around a new piece of equipment along with their weaponry. That could be 3D printers for fixing things when help can't get there. "The force ...

As police departments around the country report a surge in 3D-printed firearms turning up at crime scenes, gun safety ...

For decades, America's detectives have made breakthroughs in crime using gun traces. A homicide investigator typically uses ballistics and serial numbers of weapons checked via a vast network of gun ...

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