Ray Mabus, a Navy veteran and former Mississippi governor who served as ambassador to Saudi Arabia in the 1990s, has emerged as a frontrunner for the Navy secretary post in President Obama's administration, sources tell Inside the Navy . Mabus, a Democrat who endorsed Obama for the White House in 2007, served as a campaign adviser on Middle East issues. He also served a two-year tour in the early 1970s as a naval officer aboard the guided-missile cruiser Little Rock...