Fourteen days after the disappearance of Malaysia Airlines Flight 370, finding it remains a global priority - with 26 countries searching for the missing aircraft.
The bulk of the attention is on the southern Indian Ocean, where a commercial satellite photographed objects that Australian authorities say could be related to the plane.
Authorities have called the find the best lead yet on where the missing plane might be, and it has prompted a massive search in the area more than 1,500 miles (2,400 kilometers) southwest of Australia.
So far, they have turned up nothing.
But if it turns out to be debris from Flight 370 - the question is how did it get there? Did deadly fumes incapacitated the passengers and crew, creating what some are calling a "zombie plane" and the plane flew there on auto-pilot?
OutFront: Martin Savidge is in a 777 flight simulator with pilot trainer Mitchell Casado. And Miles O'Brien, a CNN aviation analyst and a science correspondent for PBS Newshour. Jeff Wise, a private pilot, and an aviation journalist. And Captain and CNN Aviation analyst Les Abend who flies the Boeing 777.