Sixteen-year-old Quincy Wilson, a gold medalist in the men’s 4×400 meter relay at this summer’s Paris Olympics, takes pictures with fellow guests during an event honoring the U.S. Olympic and Paralympic teams on the South Lawn of the White House on Monday. Wilson, a junior at Bullis School in Potomac, Md., is the youngest men’s track and field gold medalist in history and the youngest male track and field athlete to represent the United States at the Olympics.