U.S. authorities believe the suspect in the fatal shootings of four Marines in Tennessee visited Jordan last year and possibly Yemen as well, two U.S. government sources said on Friday, as investigators looked for any connection to Islamist militants.Mohammod Youssuf Abdulazeez, a 24-year-old Kuwait-born U.S. citizen A little more than 24 hours after the shooting, the FBI said it continued to investigate it as an act of terrorism and that it was "premature" to speculate on the motive. Abdulazeez's travel was part of the investigation. "We do know that he has traveled outside of the United States," Ed Reinhold, FBI...