A passenger plane is on fire during its emergency landing in Sheremetyevo International Airport in Moscow, Russia, May 5, 2019. Russia's Investigative Committee said on May 6 that 41 people were killed after the SSJ-100 passenger plane en route to the northwest Russian city of Murmansk caught fire before the emergency landing on May 5 at the Sheremetyevo International Airport in Moscow. (Photo by Sergei/Xinhua)