** FILE ** In this Sept. 27, 2012, file photo, U.S. Defense Secretary Leon Panetta, speaks at a news conference with U.S. Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey, not pictured, at the Pentagon, in Washington. (AP Photo/Jacquelyn Martin, File)

Photo by: Jacquelyn Martin

** FILE ** In this Sept. 27, 2012, file photo, U.S. Defense Secretary Leon Panetta, speaks at a news conference with U.S. Chairman of the Joint Chiefs of Staff Gen. Martin Dempsey, not pictured, at the Pentagon, in Washington. (AP Photo/Jacquelyn Martin, File)