A plane has spotted objects in the new search area for missing Malaysia Airlines flight MH370.
The sighting must be confirmed by ship, but that's not expected to happen until tomorrow, according to the Australian Maritime Safety Authority.
The new search area is northeast of the previous search area in the Indian Ocean. It's closer to Australia, which means planes and ships can get to it faster.
However, it's still a massively complex undertaking, the BBC's Phil Mercer tells Here & Now's Sacha Pfeiffer.
"The search area is bigger than the mass of Great Britain," Mercer said. "It's a huge task to go up and down. They call it lawn-mowing. They have a grid. The planes, they go up, they go down and they go across, just to make sure as much of that vast area of ocean is scoured."
Note: Please subscribe to the Here & Now podcast to hear this BBC interview.
- Phil Mercer, reporter for the BBC in Perth, Australia. He tweets @philmercer.
This segment aired on March 28, 2014.