INTERVIEW PREP Defense Secretary Leon E. Panetta and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, prepare for an interview on "Face the Nation," a CBS news program, in Washington, D.C., Jan. 6, 2012. Panetta and Dempsey responded to a range of questions on defense issues for the program, which aired Jan. 8. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 497784-E-VMH38-568.jpg Photo Gallery