China's Bayi Aerobatic Team performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

Singaporean AH-64 Apache helicopters perform during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

China's Bayi Aerobatic Team performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A Singaporean F-15SG fighter jet performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

China's Bayi Aerobatic Team performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

China's Bayi Aerobatic Team performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A U.S. Air Force F-22 fighter jet performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A U.S. Air Force F-22 fighter jet performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A U.S. F-35B Lightning II fighter jet performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

China's Bayi Aerobatic Team performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A Singaporean F-15SG fighter jet performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A U.S. Air Force F-22 fighter jet performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A U.S. F-35B Lightning II fighter jet performs during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)

A Singaporean F-15SG fighter jet and an AH-64 Apache helicopter perform during media preview of the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 9, 2020. The airshow will be held from Feb. 11 to 16. (Photo by Then Chih Wey/Xinhua)