Defense Secretary Leon E. Panetta (left) looks on as Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, testifies on Capitol Hill in Washington on Thursday, Sept. 22, 2011, before the Senate Armed Services Committee on U.S. strategy in Afghanistan and Iraq. (AP Photo/Harry Hamburg)

Photo by: Harry Hamburg

Defense Secretary Leon E. Panetta (left) looks on as Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, testifies on Capitol Hill in Washington on Thursday, Sept. 22, 2011, before the Senate Armed Services Committee on U.S. strategy in Afghanistan and Iraq. (AP Photo/Harry Hamburg)