U.S. Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, and his wife, Deanie, open a USO show for U.S. service members and their families on Naval Station Rota, Spain, Dec. 6, 2014. Dempsey is visiting U.S. service members who are deployed outside the United States during the holidays. DoD photo by D. Myles Cullen