Australian Int'l Airshow and Aerospace & Defence Exposition held in Melbourne(1/12)

An Australian Defence Force F-35 performs during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

An Australian Defence Force F-35 performs during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

An Australian Defence Force F-35 performs during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

An Australian Defence Force F-35 performs during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

A U.S. Air Force F-22 flies during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

An Australian Defence Force F-35 performs during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

A U.S. Air Force F-22 flies during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

A U.S. Air Force F-22 and an Australian Defence Force F-35 perform during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

A U.S.Air Force F-22 flies during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)

Royal Australian Air Force Roulettes aerobatic team perform during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, on Feb. 28, 2019. (Xinhua/Bai Xuefei)Scandinavian Airshow aerobatic team perform during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, Feb. 28, 2019. (Xinhua/Bai Xuefei)

Scandinavian Airshow aerobatic team perform during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, Feb. 28, 2019. (Xinhua/Bai Xuefei)

Scandinavian Airshow aerobatic team perform during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, Feb. 28, 2019. (Xinhua/Bai Xuefei)