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Continue to ChatUSAF secretly built and flew six generation fighter demonstrator https://www.globaldefensecorp.com/2020/09/18/usaf-secretly-built-and-flew-six-generation-fighter-demonstrator/
USAF secretly built and flew six generation fighter demonstrator https://www.globaldefensecorp.com/2020/09/18/usaf-secretly-built-and-flew-six-generation-fighter-demonstrator/