The next phase of the search for Flight 370 has begun with the arrival of search vessels that will conduct detailed sonar sweeps of the southern Indian Ocean. Look back on the months-long search for the Malaysia Airlines jetliner that went missing in March.
The flight from Kuala Lumpur to Beijing went missing on March 8. In early April, Malaysian Prime Minister Najib Razak confirmed everyone's worst fears with news that the jetliner did indeed go down over the southern Indian Ocean and had not landed elsewhere as some had hoped.
He cited a new analysis of satellite data by a British satellite company and accident investigators for the dramatic announcement, effectively ending hopes that anyone survived.
Here is a look at the unprecedented international effort to solve what has become one of modern aviation's greatest mysteries.
Co-pilot Marc Smith turns his Royal Australian Air Force (RAAF) AP-3C Orion aircraft at low level in bad weather while searching for missing Malaysian Airlines Flight 370 over the southern Indian Ocean on March 24, 2014.
International press gather around a Royal Australian Air Force AP-3C Orion upon its return from a search for Malaysia Airlines Flight 370 at RAAF Base Pearce north of Perth, Australia, on March 24, 2014.
Royal Australian Air Force Airborne Electronics Analyst, Sgt. Ben Herbert from No. 10 Squadron, prepares to man his station prior to entering the search area aboard an AP-3C Orion off the coast of Western Australia.
Radar specialists are pictured aboard a Royal New Zealand Air Force P-3K2 Orion aircraft searching for missing Malaysia Airlines Flight 370 over the southern Indian Ocean on March 22, 2014.
Lts. Kyle Atakturk (L) and Nicholas Horton, fly a U.S. Navy P-8A Poseidon during a mission over the Indian Ocean to assist in search and rescue operations for Malaysia Airlines Flight 370 on March 19, 2014.
Australian Air Force Tactical Coordinator, Flying Officer Imray Cooray from No. 10 Squadron, coordinates the execution of a search for the missing Malaysia Airlines Flight 370 aboard an AP-3C Orion.
The area the plane went down in is considered one of the most remote in the world.
At one point, the search covered an area nearly the size of the United States.
One of the initial search areas west of Perth was so remote that it took three hours just to get there by plane.
Crews then had only a couple hours to search before having to return so they didn't run out of fuel.
Investigators initially focused on an area in the South China Sea, where the plane was last detected at a normal cruising altitude of 35,000 feet in the early hours of March 8.
Crews then focused their efforts on an area 1,500 miles west of Perth after several reports of debris being spotted. Here, members of the Australian Defence Force drop data markers over possible debris fields.
The search has now gone underwater, with the U.S. military bringing in a "ping detector" in an attempt to pick up data from the airliner's black box.