ARMED SERVICES HEARING Defense Secretary Robert M. Gates, center, responds to questions during testimony with Under Secretary of Defense Comptroller Robert Hale and Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, before the Senate Armed Services Committee in Washington, D.C., Feb. 2, 2010. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 734446-C-LXX28-683.jpg Photo Gallery