malaysian airlines flight 370, michael holmes monitoring the search. he is in perth. joe johns in kuala lumpur with the breaking news on the investigation. at this moment, they ve got a fifth possible ping and they re analyzing it as they think it could have come from the black box. this is a new ping. they re look agent it at this moment. they re hoping to that that analysis any instant at this hour. the navy supply ships cesar chavez en route. as for the investigation, this is amazing. officials tell cnn, officials now say it was the pilot, who spoke the final words to air traffic controllers, good night malaysian 370. earlier in the investigation that. said the copilot said that. he had been having earlier communications. so this would have been a change to the pilot. the source says there was no sign of stress in the captain s voice. we re going to have much more on that breaking news coming up and a friend of is the pilot out front later this hour. i want to begin with the bre