** FILE ** In this Feb. 13, 2013, file photo, Defense Secretary Leon Panetta speaks during his last news conference as defense secretary at the Pentagon in Washington. (AP Photo/Susan Walsh, File)

Photo by: Susan Walsh

** FILE ** In this Feb. 13, 2013, file photo, Defense Secretary Leon Panetta speaks during his last news conference as defense secretary at the Pentagon in Washington. (AP Photo/Susan Walsh, File)