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BERLIN, GERMANY - SEPTEMBER 05: Armin Papperger, Chairman of the Board of German Defense Group Rheinmetall on September 05, 2014 in Berlin, Germany. (Photo by Trutschel/Photothek via Getty Images)

BERLIN, GERMANY - SEPTEMBER 05: Armin Papperger, Chairman of the Board of German Defense Group Rheinmetall on September 05, 2014 in Berlin, Germany. (Photo by Trutschel/Photothek via Getty Images)