"Good Night. Malaysian Three Seven Zero.”
Those six words were the last radio transmission from the cockpit of Malaysia Airlines Flight 370, less than an hour after the aircraft took off late at night from Kuala Lumpur for Beijing on March 8, 2014. Minutes later, the plane disappeared from air-traffic control radar screens.
The huge Boeing 777 jet, almost as long as a Manhattan city block and taller than a five-story building, had somehow managed to make itself invisible in the clear night sky. There were 239 people on board.