It's been nearly three months since Malaysia Airlines Flight 370 disappeared and now the most promising lead has been discounted.
A U.S. Navy official tells CNN the underwater pings thought to be from MH370 are not from the plane.
Australian authorities heading the search say they've been looking in the wrong place for weeks.
So will the missing plane ever be found?
In interview with CNN's Erin Burnett, the man leading the investigation, Chief Commissioner for the Australian Transport Safety Bureau, Martin Dolan says he is "absolutely sure" that the plane is not in the ping area.
I've worked with engineers for over 30 years so I wouldn't be surprised to learn that they are completely wrong about the flight path.
So let;s go over it all again.
The plane heads for Beijing.
A fire is detected in the cargo hold. the pilots turn around and head for the nearest airport.
The fire intensifies. The pilots take the plane up to 45,000 feet then dove in an attempt to put the fire out. This attempt fails, everyone on board is overcome by smoke/fumes.
The plane continues to fly in a westerly direction until it runs out of fuel.