Classified documents allegedly leaked by Massachusetts Air National Guardsman Jack Teixeira reveal that US intelligence officials were aware of as many as four other Chinese spy balloons apart from the one that floated across the country earlier this year. One of the previously undisclosed balloons flew over a US carrier strike group in the Pacific, according to the Washington Post. Another Chinese craft, code-named Bulger-21 by US officials, circumnavigated the Earth from December 2021 until May 2022, according to top-secret documents reviewed by the news outlet. A third balloon named Accardo-21 is mentioned in the documents and a fourth is…