JOINING THE SHOW Two airmen and a soldier join singer Kellie Pickler, right, perform for the audience during a USO-sponsored holiday tour led by U.S. Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, at the transit center in Manas, Kyrgyzstan, Dec. 14, 2012. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 230606-X-OGC57-357.jpg Photo Gallery