U.S. service members pose at the United Service Organization

U.S. service members pose at the United Service Organization Holiday Troop Visit at Bagram Air Field, Parwan province, Dec. 9, 2013. The 2013 USO Chairman's Holiday Tour is a seven-stop, four-country troop visit led by Chairman of the Joint Chief of staff Gen. Martin E. Dempsey. This year's tour includes "Duck Dynasty" stars Willie Robertson and Jep Robertson, Washington Nationals first baseman Adam LaRoche, Grammy-winning singer and song writer Bridget Kelly, former New England Patriots offensive tackle and three-time Super Bowl champion Matt Light, actor and comedian Thomas "Nephew Tommy" Miles and former correspondent for the NBC's "The Voice," Allison Haislip. The USO tour travels to various locations throughout Afghanistan to boost morale and esprit de corps for troops that are currently serving overseas. (U.S. Army photo by Spc. Chenee' Brooks/Released)