A signaling system was disabled on the missing Malaysia Airlines jet before a pilot spoke to air traffic control without mentioning trouble, a senior Malaysian official said on Sunday, reinforcing theories that one of the pilots may have been involved in diverting the plane and adding urgency to the investigation of their pasts and possible motivations. With the increasing likelihood that Flight 370 was purposefully diverted and flown possibly thousands of miles from its planned route, Malaysian officials faced more questions about how the investigation, marked by days of contradictory government statements, might ... (full story)