Television personality Alex Trebek delivers remarks at the USO 75th Anniversary Reception in Washington Feb. 4, 2016. Marine Gen. Joseph F. Dunford Jr., chairman of the Joint Chiefs of Staff, served as the event's keynote speaker. (DoD Photo by Navy Petty Officer 2nd Class Dominique A. Pineiro)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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