A Sukhoi Su-57 fighter jet is seen during the closing day of the International Aviation and Space Salon (MAKS)-2021 in a Moscow suburb, Russia, on July 25, 2021.(Photo: Xinhua)
The Russian Knights aerobatic demonstration team perform during the closing day of the International Aviation and Space Salon (MAKS)-2021 in a Moscow suburb, Russia, on July 25, 2021.(Photo: Xinhua)
A visitor poses for a photo with the Ka-52K attack helicopter during the closing day of the International Aviation and Space Salon (MAKS)-2021 in a Moscow suburb, Russia, on July 25, 2021.(Photo: Xinhua)
Visitors look at Orion-E unmanned aerial vehicle (UAV) during the closing day of the International Aviation and Space Salon (MAKS)-2021 in a Moscow suburb, Russia, on July 25, 2021.(Photo: Xinhua)