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U.S. President Donald Trump (2nd R) presents the Public Safety Officer Medal of Valor to a recipient at the White House in Washington D.C., the United States, on May 22, 2019. (Xinhua/Ting Shen)

U.S. President Donald Trump (2nd R) presents the Public Safety Officer Medal of Valor to a recipient at the White House in Washington D.C., the United States, on May 22, 2019. (Xinhua/Ting Shen)