2021 Canadian International Air Show held in Toronto(1/8)

The Canadian Forces Snowbirds perform during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021. The two-day event kicked off on Saturday.(Photo/China News Service/Yu Ruidong)

The Canadian Forces Snowbirds perform during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021.(Photo/China News Service/Yu Ruidong)

A U.S. Air Force F-35A performs during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021. (Photo/China News Service/Yu Ruidong)

The Canadian Forces Snowbirds perform during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021.(Photo/China News Service/Yu Ruidong)

The Canadian Forces Snowbirds perform during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021. (Photo/China News Service/Yu Ruidong)

The Canadian Forces Snowbirds perform during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021. (Photo/China News Service/Yu Ruidong)

The Canadian Forces Snowbirds perform during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021.(Photo/China News Service/Yu Ruidong)

The Canadian Forces Snowbirds perform during the 2021 Canadian International Air Show in Toronto, Canada, on Sept. 4, 2021.(Photo/China News Service/Yu Ruidong)