SHAKING HANDS WITH SENATORS Defense Secretary Robert M. Gates, right, and Navy Adm. Michael G. Mullen, chairman of the Joint Chiefs of Staff, greet Sen. Carl Levin, left, and Sen. John W. Warner, prior to testifying before the Senate Armed Services Committee, Feb. 6, 2008. SHARE: Download: Full Size (0.02 MB) Credit: VIRIN: 670947-L-BZK29-719.jpg Photo Gallery