<P> This section incorporates work from https://peosoldier.army.mil/newpeo/Equipment/Temp.asp?id=CIE_SS, which is in the public domain as it is a work of the United States Military . </P> <P> In November 2012, the U.S. Army developed a tactical 3D printing capability to allow it to rapidly manufacture critical components on the battlefield . </P>

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