The US Air Force has built and flown a mysterious full-scale prototype of its future fighter jet

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Thank you my friend MAJ Dale E. Wilson, Ph.D. for posting the article from defense news .
The U.S. Air Force has secretly designed, built and flown at least one prototype of its enigmatic next-generation fighter jet, the service’s top acquisition official confirmed to Defense News on Sept. 14.
The development is certain to shock the defense community, which last saw the first flight of an experimental fighter during the battle for the Joint Strike Fighter contract 20 years ago. With the Air Force’s future fighter program still in its infancy, the rollout and successful first flight of a demonstrator was not expected for years.
“We’ve already built and flown a full-scale flight demonstrator in the real world, and we broke records in doing it,” Will Roper told Defense News in an exclusive interview ahead of the Air Force Association’s Air, Space and Cyber Conference. “We are ready to go and build the next-generation aircraft in a way that has never happened before.”
FYI Lt Col John (Jack) Christensen Maj Marty Hogan TSgt David L. TSgt Joe C. MSgt Robert "Rock" Aldi SMSgt Lawrence McCarter SSgt Marian Mitchell SSgt (Join to see) Lt Col Charlie Brown Col Carl Whicker Sgt (Join to see) Maj Bill Smith, Ph.D. Maj William W. 'Bill' Price Maj Kim Patterson

Thanks for the post Sir.