U.S. Secretary of Defense Mark Esper speaks to reporters during a visit to the U.S. Strategic Command at Offutt AFB, Neb., Thursday, Feb. 20, 2020. (AP Photo/Nati Harnik)
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U.S. Secretary of Defense Mark Esper speaks to reporters during a visit to the U.S. Strategic Command at Offutt AFB, Neb., Thursday, Feb. 20, 2020. (AP Photo/Nati Harnik)
