U.S. Central Command Commander-nominee Marine Corps Gen. James Mattis, center, smiles on Capitol Hill in Washington, Tuesday, July 27, 2010, prior to testifying before the Senate Armed Services Committee hearing on his nomination. (AP Photo/Alex Brandon)

Photo by: Alex Brandon

U.S. Central Command Commander-nominee Marine Corps Gen. James Mattis, center, smiles on Capitol Hill in Washington, Tuesday, July 27, 2010, prior to testifying before the Senate Armed Services Committee hearing on his nomination. (AP Photo/Alex Brandon)