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. (Xinhua/Bai Xueqi)
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. (Xinhua/Bai Xueqi)
People visit the International Aviation and Space Salon (MAKS)-2021 during its closing day in a Moscow suburb, Russia, on July 25, 2021. (Xinhua/Bai Xueqi)
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. (Xinhua/Bai Xueqi)
The First Flight 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. (Xinhua/Bai Xueqi)
People visit the International Aviation and Space Salon (MAKS)-2021 during its closing day in a Moscow suburb, Russia, on July 25, 2021. (Xinhua/Bai Xueqi)
The Swifts 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. (Xinhua/Bai Xueqi)
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. (Xinhua/Bai Xueqi)
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. (Xinhua/Bai Xueqi)
People look at a Su-30SM fighter aircraft during the closing day of the International Aviation and Space Salon (MAKS)-2021 in a Moscow suburb, Russia, on July 25, 2021. (Xinhua/Bai Xueqi)