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A soldier sits in a Boxer armored vehicle at the DSEI arms fair in London on Sept. 11, 2019. Held every two years, the event is the world's largest arms fair. (Leon Neal/Getty Images)
A soldier sits in a Boxer armored vehicle at the DSEI arms fair in London on Sept. 11, 2019. Held every two years, the event is the world's largest arms fair. (Leon Neal/Getty Images)