Family members of passengers aboard Malaysia Airlines Flight 370 tearfully shouted slogans during a protest Tuesday in front of the Malaysian Embassy in Beijing. Kim Kyung-hoon/Reuters/Landov hide caption

itoggle caption Kim Kyung-hoon/Reuters/Landov

Chinese relatives of the passengers onboard Malaysia Airlines flight MH370 wait for the latest information at Lido Hotel Sunday in Beijing, China. Lintao Zhang/Getty Images hide caption

itoggle caption Lintao Zhang/Getty Images

This satellite image, taken on March 18, has intensified the search for Malaysia Airlines Flight 370 in the Indian Ocean about 1,500 miles southwest of Perth, Australia. The image was released Saturday by Chinese authorities. /Reuters/Landov hide caption

itoggle caption /Reuters/Landov

Adm. Mohd Amdan Kurish of the Malaysian Maritime Enforcement Agency Admiral, left, checks radar during a search for the missing Malaysia Airlines plane off Tok Bali Beach in Kelantan, Malaysia, on Sunday. Malaysian Maritime Enforcement Agency/AP hide caption

itoggle caption Malaysian Maritime Enforcement Agency/AP

In Beijing, anxious relatives continue to wait for word about the fate of Malaysia Airlines Flight 370. The Beijing-bound jet disappeared on Saturday. Mark Ralston /AFP/Getty Images hide caption

itoggle caption Mark Ralston /AFP/Getty Images

As the search for Malaysia Airlines Flight 370 has expanded, teams from many countries have been involved. This navigator was aboard a Vietnamese helicopter searching the waters off that nation's coast. Hoang Dinh Nam/AFP/Getty Images hide caption

itoggle caption Hoang Dinh Nam/AFP/Getty Images

A woman, believed to be the relative of a passenger onboard Malaysia Airlines flight MH370, cries as she talks on her mobile phone at the Beijing Capital International Airport in Beijing. Kim Kyung-Hoon/Reuters /Landov hide caption

itoggle caption Kim Kyung-Hoon/Reuters /Landov

Delegates from China's People's Liberation Army (PLA) march from Tiananmen Square to the Great Hall of the People to attend sessions of National People's Congress and Chinese People's Political Consultative Conference Tuesday in Beijing. Ng Han Guan/AP hide caption

itoggle caption Ng Han Guan/AP

Two of the names carved into the Great Wall, in this case near Badaling, China. Authorities hope to cut down on graffiti by giving tourists a designated spot to leave their marks. David Guttenfelder /AP hide caption

itoggle caption David Guttenfelder /AP