[PIF]

More here:
The U.S. Air Force Has Secretly Flown A Demonstrator For Its Next-Generation Fighter
Little is known about the actual aircraft or who even built it, but it's a sign that the next-generation fighter effort is rapidly accelerating.
By Thomas Newdick September 15, 2020

It may be unmanned ... manufacture and designation of the NGAD fighter is unknown

[odawg]

The production is rapid because maybe they don’t have to be concerned over pilot safety.