Defense Secretary Robert Gates, left, and Joint Chiefs Chairman Adm. Michael Mullen, second from left, greet Senate Appropriations Defense subcommittee chairman Sen. Daniel Inouye, D-Hawaii, right, and subcommittee member Sen. Patrick Leahy, D-Vt. , as they arrive on Capitol Hill in Washington, Tuesday, June 9, 2009, to testify before the subcommittee's hearing on the Defense Department's fiscal year 2010 budget.