HASC TESTIMONY Defense Secretary Robert M. Gates, left, and Navy Adm. Mike Mullen, right, chairman of the Joint Chiefs of Staff, testify at a hearing of the House Armed Services Committee on operations in Libya at the Rayburn House Office Building in Washington, D.C., March 31, 2011. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 877463-X-RUQ23-047.jpg Photo Gallery