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U.S. Navy aerobatics team Blue Angels perform during an air show of the annual Fleet Week activities in San Francisco, the United States, Oct. 10, 2021. (Photo by Dong Xudong/Xinhua)
U.S. Navy aerobatics team Blue Angels perform during an air show of the annual Fleet Week activities in San Francisco, the United States, Oct. 10, 2021. (Photo by Dong Xudong/Xinhua)