Crews may have discovered the wreckage of a missing Malaysian airliner.  CNN reports satellite images out of China might show the crash site of Flight 370.  The Boeing 777 vanished from radar on Saturday while en route from Kuala Lumpur to Beijing with 239 people aboard, including several Americans.  Since then, a massive international effort has been unable to uncover any clues about the flight's fate.  International authorities said yesterday that terrorism appears unlikely.