Chairman’s USO Holiday tour singing “White Christmas“

Country music artist Kellie Pickler, retired Chicago Bear middle linebacker Brian Urlacher, actress Dianna Agron, Deanie Dempsey, Gen Martin Dempsey, comedian Rob Riggle, actress Meghan Markle, and Washington Nationals pitcher Doug Fister sing “White Christmas“ during the fifth and final stop of the Chairman’s USO Holiday tour in RAF Mildenhall, England, Dec. 10, 2014.